Flacbox

Flacbox is a hi-res music player that lets you manage audio tracks like regular files and stream them from any cloud service or NAS — no iTunes sync needed.

You can upload your entire music collection to cloud services like Dropbox, Google Drive, OneDrive, iCloud Drive, MEGA, Box, pCloud, or a personal NAS, and play music directly from the cloud with full control. To listen offline, use the built-in download manager to save music to your device. Files are stored on your storage exactly as you put them there — Flacbox simply plays them.

Explore our how-to guides for more details:

• Flacbox guide
  
• How to play music from iCloud Drive on iPhone or Mac
  
• How to enable DLNA media server on Windows 10 and play your music on iPhone
  
• How to upload files to cloud storage and connect them to Evermusic, Flacbox, Evertag
  
• How to transfer files wirelessly from a computer to iPhone using WiFi-Drive
  
• How to connect a USB flashcard to iPhone and listen to music
  
• How to play music on iPhone from WD My Cloud Home

Yes — Flacbox is free to use with some limitations, which can be removed by upgrading to the Premium version.

You can choose between a one-time lifetime purchase or two subscription options (monthly or yearly). Prices may vary based on your region. Family Sharing is enabled for all plans, so you can share Premium with up to five members of your family. Premium purchases and subscriptions are shared across iOS and Mac via iCloud — to sync your purchase, make sure iCloud is enabled on both devices, open the app on iOS, and wait a minute for sync to complete.

Read more about the differences between Flacbox and Flacbox Premium

Flacbox is the audiophile-focused player with FFmpeg-powered format support, configurable sample rate, multi-channel output, and pitch correction; Evermusic is the mainstream player with crossfade, gapless, spatial audio, and a broader cloud feature set.

Flacbox is built to support all default iOS audio formats along with many additional formats not natively supported on iPhone, such as WMA, OGG, OPUS, APE, DSD, DSF, DFF, TTA, MPC, WV, and more. It uses a custom audio engine (system codecs + FFmpeg) to handle nearly every format, and offers audiophile-grade features like adjustable audio output sample rate (44.1 – 96 kHz), multi-channel output (Mono → 5.1 → SDDS), IO buffer tuning, and pitch correction (-1000 to +1000).

Evermusic supports the default Apple audio formats and includes consumer-friendly features like crossfade playback, gapless playback, spatial audio, audio equalizer, playback speed control, and broader cloud-streaming tooling. If you mainly use MP3, AAC, ALAC, or FLAC and want crossfade, gapless, or spatial audio, Evermusic may be the better option. If you need broad compatibility with a wider range of audio formats — especially DSD or WMA — and want fine control over the audio output chain, Flacbox is the right choice.

Learn more about the differences

Yes — Flacbox uses only official SDKs and secure OAuth connections to interact with connected cloud services, never sees your password, and stores only encrypted access tokens in the iOS Keychain.

When you enter your login and password, the application shows you the official authorization page provided by the cloud service provider, and the entire authorization process happens outside Flacbox. The cloud provider then sends an auth-token to the application after successful authorization, and that token is used to make API calls.

An auth-token is a digital key that allows third-party applications to interact with cloud storage. The token is stored on your device in Apple’s secure system storage (Keychain), which is encrypted at rest and protected by your device passcode or biometric lock. Downloaded files are stored in the app’s Documents directory; you can remove them at any time using the built-in file manager.

The application does not share any information from connected cloud accounts with Everappz, advertisers, or any third party. You can revoke access to your cloud account at any time by opening the account-settings page in your web browser. To revoke an auth-token, log in to your cloud account on the web, navigate to the security or connected-apps page, and remove the entry for Flacbox.

You can also disconnect the cloud account inside the application itself — when you do, the auth-token is immediately deleted from your device. Uninstalling the application deletes all downloaded data and tokens automatically.

Read more

To create a playlist, open the Playlists tab, tap “+” or the “…” menu, choose “New Playlist,” name it, then pick the tracks to add from Library, Files in This Application, Files on This Device, or Connections.

• Open the Playlists section.
  
• Tap the + button or the "…" button in the top-right corner and select New Playlist.
  
• Enter a name for the playlist and tap Save. The Add Songs dialog appears.
  
• Select the tracks you want to add to the playlist, then tap Done.
  
  

By default, each song can be added to a playlist only once. To allow duplicate songs, enable Settings → Music Library → Playlists → Duplicates in a Playlist → Enable. You can later change song order, rename the playlist, edit its cover image, archive it as a ZIP, and export it to M3U, CSV, or TXT.

Read more

Flacbox supports virtually every popular cloud storage service, self-hosted media server, file-share protocol, and S3-compatible object store — all from one Connect to cloud storage screen.

Personal cloud storage: iCloud Drive · Google Drive · Dropbox · OneDrive (Personal and Business) · Box · MEGA · pCloud · Yandex Disk · WD My Cloud Home · MediaFire · TeraCLOUD (InfiniCLOUD) · HiDrive · IceDrive · Koofr · OpenDrive · MyDrive · Put.io · Cloud Mail.ru · Internxt · Proton Drive · AliDrive (阿里云盘) · Baidu Pan (百度网盘).

Self-hosted media servers and music-server APIs: Plex · Jellyfin · Emby · Subsonic (and every Subsonic-compatible server — Airsonic, Funkwhale, Gonic, Logitech Media Server, Ampache) · Navidrome · Nextcloud (and ownCloud via the shared API) · Synology Drive · QNAP.

NAS and file-share protocols: SMB (SMB1, SMB2, Auto) · WebDAV (HTTP / HTTPS) · FTP / FTPS · SFTP (password or public-key auth) · NFS · DLNA / UPnP (playback and download). Works with Apple Time Capsule, Synology, QNAP, WD My Cloud Home, Buffalo, any Linux Samba / NFS / SSH host, or a shared folder on your Mac or Windows PC.

S3-compatible object storage: AWS S3, Backblaze B2, Wasabi, Cloudflare R2, MinIO, DigitalOcean Spaces, and any other S3-API endpoint.

Local-network discovery: the Available Devices section auto-lists every Bonjour / mDNS service on your Wi-Fi network — Plex, Jellyfin, Emby servers, Synology, QNAP, AirPort routers with attached drives, Time Capsule — so you can tap to connect without typing an IP address.

Each connection uses the official SDK or open protocol of the service, with OAuth-based authorization where supported. You can connect multiple accounts of the same service (for example, two Google Drive accounts, a personal Dropbox alongside a work one, or both a Plex and a Jellyfin server). Premium users can add an unlimited number of services; the free version is limited to three.

Read more

Open the audio player screen, tap the Equalizer icon, turn the equalizer on, and either pick a preset or move the sliders to build your own.

• Open the Audio Player screen.
  
• Tap the Equalizer icon on the bottom of the screen.
  
• Toggle the switch in the top-right corner of the equalizer screen to activate it.
  
• Select one of the available presets (Rock, Pop, Dance, Disco, Classical, Jazz, Acoustic, Bass Booster, and more) or drag the band sliders to build your own preset.
  
• Use the preamplifier to add overall gain or trim it back. Tap Save to keep your custom preset under any name.
  
  

Flacbox uses a 10-band equalizer, and the EQ is also available during AirPlay, Chromecast, and CarPlay playback. We have a full tutorial here:
How to use the audio equalizer on your iPhone, iPad, Mac with Evermusic and Flacbox

Connect a cloud service, find a music folder, tap “More Actions → Enable Offline Mode” — the folder and any new files added to it download automatically to Local Files → Offline Folders.

• Connect a Cloud Service: open the Connections tab. Select Connect a cloud service and follow the prompts.
  
• Navigate to Music Folder: open the connected cloud service and find your music folder.
  
• Enable Offline Mode: tap the "…" button next to the folder name and choose Enable Offline Mode.
  
• Download Content: the selected folder and all its contents will be downloaded to Local Files → Offline Folders.
  
• Automatic Updates: the app continuously scans for changes. New files added to the online folder are automatically downloaded.
  
• Configure Scanning Timeout: go to Settings → File Manager → Offline Folders → Time Interval to set the scanning frequency.
  
• Manual Synchronization: to sync manually, go to Settings → File Manager → Offline Folders → Synchronized Offline Folders. Tap "…" and select Start Synchronization.
  
  

Read more

Open Local Files, scroll to “Files on This iPhone,” tap “Open Files…” or “Open Folder…”, and pick the audio files or folder you want to play.

The app scans the folder’s content, adds found audio files to the player queue, and plays them directly from their original location without copying anything to the application bundle.

Adding a Folder to Favorites for Quick Access
Open the Local Files screen, scroll to Quick Access, and tap Favorites to access the Favorite Files screen. Tap the more actions button "…" in the top-right corner and select Add Folder. Navigate to your desired folder and tap Open to confirm. Your folder will be added to Favorite Files, giving you quick access to your music without repeating the steps.

Importing Local Files to the Music Library
If you prefer to organize your local files within your music library, open the Music Library screen, tap the three-dots button at the top-right corner, and select + Add Music. Choose the Local Files menu item, scroll down to the Files on This iPhone section, and tap Open Files…. Select the files you want to add and tap Open to confirm. The app scans the selected files and adds them to your music library, organizing them by metadata such as artist, album, and genre.

Adding Local Files to a Playlist
To add local files to a playlist, open the Playlists screen and tap the more button in the top-right corner. Select + New Playlist, enter a name for your new playlist, and on the next screen, select the Local Files option. Scroll down to the Files on This iPhone section and tap Open Files…. Select the audio files you want to add and tap Open to confirm. The files will be added to your playlist, where you can change the song order and perform other actions using the more button.

Read more

Enable Save Audio Player State in Settings → Audio Player → General, then tap Continue Playback at the top of any playlist, album, artist, or folder to resume from the exact last position.

When you switch to another playlist and come back, you’ll see four actions on the top toolbar under the album artwork: Search, Continue Playback, Play All, and Shuffle All. Tap Continue Playback to resume the playlist from the last saved state and media position. You can also enable Save Playback Position to remember the position within each individual track — handy for audiobooks and long mixes.

Open the full-screen audio player, tap “…” → View Comments, then swipe to switch between Comments, Embedded Lyrics, and LRC File modes.

1. Start playing a track.
   
2. Open the full-screen audio player.
   
3. Tap the More Actions button in the top-right corner.
   
4. Choose View Comments.
   
5. Swipe right to switch between Comments, Embedded Lyrics, and LRC File modes.
   
   

Modes:

• Comments — content from the COMMENT tag.
  
• Embedded Lyrics — lyrics from the LYRICS tag; supports timed text in LRC format. Edit lyrics with an external tag editor such as Evertag, or download LRC files from sites like Lyricsify and paste them into the tag.
  
• LRC File — place an .lrc file with the same base name in the same folder as the audio file; the app will pick it up automatically.
  
  

Read more

You can transfer music to Flacbox over SMB, WebDAV, FTP / SFTP, DLNA, Wi-Fi Drive, or via iTunes / Finder File Sharing — any method that exposes the files to your device works.

To connect a computer using SMB protocol, tap Connect a cloud service → SMB. Enter the computer’s IP address and the shared folder name in the URL field using the format smb://computer-ip-address/shared-folder-name, enter your login and password, then tap Done. If the connection is successful, the share will appear in the Cloud Services section of the Connections screen.

Full tutorial: transfer your files from the computer to iPhone using SMB protocol

For WebDAV, all steps are the same except for the URL field — use http://server-name or https://server-name if the server supports SSL. WebDAV works great with Synology, QNAP, Nextcloud, ownCloud, and any other server that exposes a WebDAV endpoint.

Full tutorial: how to connect NAS storage using WebDAV and listen to music on your iPhone or Mac

Wi-Fi Drive is a popular technology that lets you transfer files from your computer to an iOS device wirelessly using any desktop web browser. To use this feature, your device and computer should be on the same Wi-Fi network. Open Connections → Computer → Connect using Wi-Fi and enable the server. Then open a desktop browser and enter the URL shown by the app. You can drag and drop files from your computer onto the open web page and they will appear on your device almost immediately.

More detailed tutorial: how to transfer files wirelessly from a computer to iPhone using WiFi-Drive

iTunes / Finder File Sharing is another option, transferring files from a computer to a device over a Lightning or USB-C cable. Connect the device to the computer, open iTunes (or Finder on macOS Catalina and later), select the device, find Flacbox in the apps list, and copy files into its shared folder.

Detailed instructions: how to play local files on iPhone

With DLNA you can also set up a DLNA media server and stream your music from a Windows PC, NAS, or other UPnP device:
How to enable DLNA media server on Windows 10 and play your music on iPhone

Open the connected cloud service, browse to a folder, tap “…” → Select, choose the files, then tap Download — they are saved to Local Files for offline playback.

Before you can download music and listen offline, you need to connect at least one cloud account. Open the Connections screen and add your account.

To download music from the cloud:

• Open the connected cloud service.
  
• Navigate inside the folder containing the music you want to download.
  
• Tap the "…" button in the top-right corner and choose Select.
  
• Select the files you want to download and tap the Download button at the bottom of the screen.
  
• Track the progress in Local Files → Transfer Queue.
  
  

To enable offline mode for an artist, album, playlist, or genre:

• Open the Artist / Album / Playlist / Genre screen.
  
• Tap the Offline Mode checkbox under the artwork.
  
• The downloaded collection appears in the Offline Music section of your music library.
  
  

Read the offline mode guide

Flacbox plays the system audio formats plus dozens of extra formats through the bundled FFmpeg engine — including FLAC, ALAC, MP3, AAC, WAV, AIFF, M4A, OGG, OPUS, WMA, APE, DSD, DSF, DFF, TTA, MPC, WV, and many more.

Here is the full list of supported file extensions:

3g2, 3gp, 3gp2, 3gpp, 8svx, aa, aac, aax, ac3, act, adt, adts, aif, aifc, aiff, alac, amr, amv, ape, asf, au, avi, awb, caf, cavs, cdda, cue, dct, dff, drc, dsf, dss, dvf, “dvr-ms”, ec3, f4a, f4b, f4p, f4v, flac, flv, gif, gifv, gsm, gxf, h261, h263, h264, ifv, iklax, ivf, ivs, l16, latm, loas, m2t, m2ts, m2v, m3u, m3u8, m4a, m4b, m4p, m4r, m4v, mka, mkv, mmf, mng, mod, mogg, mov, mp1, mp2, mp3, mp4, mp4v, mpa, mpc, mpe, mpeg, mpg, mpv, msv, mts, mxf, nsf, nsv, nut, oga, ogg, ogv, opus, pcm, pls, qt, ra, raw, rm, rmvb, roq, rv, sln, snd, svi, tod, tta, vob, voc, vox, vtt, w64, wav, wave, webm, wma, wmv, wv, xhe, xmv, y4m, yuv.

Yes — Flacbox is a powerful audiobook player with per-track bookmarks, variable playback speed (0.02× to 3.00×), continue playback, a sleep timer, and customizable skip-time buttons.

How to Add Audiobooks

• For local files, connect your iPhone or iPad to your computer, open iTunes (or Finder on macOS Catalina or later), and drag your audiobook files into the Flacbox section.
  
• For cloud files, connect services like iCloud Drive, Google Drive, Dropbox, and others inside the Flacbox app to access your audiobooks remotely.
  
  

Playback Features

• Navigate to your audiobooks via Music Library or Local Files.
  
• Flacbox supports play, pause, skip, and adjustable playback speed.
  
• Enable Skip Time buttons in settings for quick navigation by 15, 30, 60, or any other interval.
  
• Create Audio Bookmarks to save your place — perfect for chapters or favorite passages.
  
• Use Continue Playback to resume from where you left off, even after closing the app.
  
  

Organization and Offline Access

• Organize audiobooks into playlists by genre, author, or series.
  
• Download audiobooks for offline listening, perfect for travel or limited connectivity.
  
  

Flacbox provides a full-featured solution for audiobook lovers on iPhone, iPad, and Mac. M4B chapter markers and long files are fully supported.

Read more

Yes — Flacbox supports NAS connections using SMB, WebDAV, FTP / FTPS, SFTP, NFS, and DLNA / UPnP protocols, which means it works with Synology, QNAP, WD My Cloud Home, Buffalo, Apple Time Capsule, and any other NAS that exposes one of those standard protocols.

To connect a NAS using SMB protocol:

• Tap Connect a cloud service → SMB.
  
• Enter the NAS server IP address and shared folder name in the format smb://your-ip/shared-folder.
  
• Choose protocol version: Auto, SMB1, or SMB2.
  
• Enter your login and password (if required).
  
• Tap Done.
  
  

If the connection is successful, you’ll see your NAS in the Cloud Services section.
Read full tutorial

To connect via WebDAV protocol:

• Steps are the same as SMB, but use a WebDAV URL like http://your-server-name or https://your-server-name if using SSL.
  
  

To stream via DLNA:

• You can stream from a Windows PC by enabling its DLNA media server.
  Read the DLNA setup guide
  
  

Available Devices section:

• Shows all discoverable NAS devices on your local network.
  
• Tap a device name to connect, then enter login credentials if needed.
  
  

Useful links:

• How to play music on iPhone from WD My Cloud Home
  
• Stream music from Mac or PC to iPhone using SMB
  
• Connect Bluesound Vault storage
  
• Connect NAS Storage Using WebDAV

Yes — Flacbox connects natively to Plex Media Server, Jellyfin, Emby, Subsonic, and Navidrome, so you can stream your self-hosted music library without ever exposing the underlying file share.

• Plex Media Server — tap Connect to cloud storage → Plex, sign in with your Plex account, and pick a server. Plex servers on the same local network are also discovered automatically in Available Devices.
  
• Jellyfin (open-source) — tap Connect to cloud storage → Jellyfin, enter your server URL (something like http://server-ip:8096) and credentials.
  
• Emby — tap Connect to cloud storage → Emby, then enter the server URL and login.
  
• Subsonic and Subsonic-compatible servers — tap Connect to cloud storage → Subsonic, enter the server URL and credentials. This works with the original Subsonic server as well as Navidrome, Airsonic, Funkwhale, Gonic, Logitech Media Server (LMS), and Ampache — anything that speaks the Subsonic API.
  
  

Once connected, the server appears alongside your cloud accounts in the Connections screen. You can browse by Artists, Albums, Genres, Playlists, and the server’s own folder layout, download tracks for offline playback, queue them in the audio player, and even pull them into Flacbox’s music library so they show up in your global Artists / Albums / Genres / Composers views.

Yes — Flacbox supports the classic Unix file-transfer protocols: FTP, FTPS, SFTP (SSH File Transfer Protocol), and NFS.

• FTP / FTPS — tap Connect to cloud storage → FTP, enter the host URL in the form ftp://server-name (or ftps://server-name for an encrypted connection), provide your login and password, then tap Done.
  
• SFTP — tap Connect to cloud storage → SFTP, enter the server address, and authenticate with either a password or an SSH key pair. SFTP works with NAS devices, Linux hosts, and any server that runs sshd.
  
• NFS (Network File System) — tap Connect to cloud storage → NFS and enter the server address and exported path. Handy for Linux hosts, BSD servers, and NAS devices that prefer NFS over SMB.
  
  

This is on top of SMB (SMB1, SMB2, Auto), WebDAV (HTTP / HTTPS), and DLNA / UPnP, which Flacbox also supports natively.

Yes — Flacbox includes an S3-compatible connector that works with AWS S3, Backblaze B2, Wasabi, Cloudflare R2, MinIO, DigitalOcean Spaces, and any other service that exposes an S3-API endpoint.

Tap Connect to cloud storage → S3 storage, then enter the endpoint URL, region, access key, secret key, and bucket name. Once connected, the bucket appears alongside your other cloud services — you can browse, stream, download, sync, and add tracks to your music library exactly the same way.

Yes — Flacbox fully supports Apple CarPlay, with dedicated tabs for Library, Connections, Local Files, and Settings, so you can browse and control playback right from your car’s infotainment screen.

You can stream from cloud storage, play offline tracks, control shuffle, repeat, queue management, and even the audio equalizer without picking up your phone. To use CarPlay, make sure Siri is enabled on your iPhone, then connect it to your vehicle via USB or wireless CarPlay.

Fine-tune the CarPlay experience in Settings → CarPlay — sort options, content loading limit (pagination), menu icons gradient color, whether images are shown for faster loading on large libraries, and Pause Playback When Connected to avoid sudden loud audio.

Read the full guide

Wi-Fi Drive lets you transfer files wirelessly from any computer to your iOS device via a desktop browser, Finder, or File Explorer — both devices just need to be on the same Wi-Fi network.

Wireless transfer using a desktop browser

1. Launch the app: open Flacbox.
   
2. Connect via Wi-Fi: go to Connections → Computer → Connect using Wi-Fi.
   
3. (Optional) Add security: enter a username and password if needed.
   
4. Start Wi-Fi Drive: tap Start Wi-Fi Drive and copy the provided URL.
   
5. Open a browser (Safari, Chrome, Opera, Firefox, etc.) and enter the URL.
   
6. Use the built-in file manager to upload, download, rename, or delete files. You can drag and drop files directly to your iPhone.
   
7. When done, tap Stop Wi-Fi Drive on your iPhone.
   
   

Note: Ensure JavaScript is enabled and you’re using the latest browser version for best performance.

Transfer files using Mac Finder

1. In Finder, click Go → Connect to Server….
   
2. Enter the server URL shown in the Flacbox app.
   
3. Click Connect and manage files on your iPhone like any network drive.
   
   

Transfer files using Windows File Explorer

1. Right-click This PC → Map Network Drive….
   
2. Enter the server URL from the Flacbox app in the Folder field.
   
3. Choose a drive letter, click Finish, and browse your iPhone’s files directly.
   
   

Read more

Yes — Flacbox plays FLAC lossless audio natively on iPhone, iPad, and Mac, including very high-resolution files, with full support for embedded album art, lyrics, and metadata.

FLAC files stream directly from connected cloud storage or play locally with no conversion or transcoding. For best results with very high-resolution files, leave the Audio Codec set to System Codec + FFmpeg or pick FFmpeg in Settings → Audio Player → General so you can also tweak sample rate and pitch correction.

Yes — Flacbox plays DSD-family formats (DSF, DFF) through its bundled FFmpeg engine. Most consumer DACs do not accept native DSD via Lightning / USB-C, so DSD is decoded to PCM in real time before output.

For best results with DSD, switch the Audio Codec to FFmpeg in Settings → Audio Player → General and pick an Audio Output Sample Rate of 88.2 kHz or 96 kHz that matches your DAC. Pair Flacbox with a USB or Lightning DAC for fully transparent decoding.

Yes — Flacbox supports Hi-Res audio playback through the FFmpeg engine, with configurable output sample rates of 44.1, 48, 64, 88.2, and 96 kHz.

In Settings → Audio Player → General, switch Audio Codec to FFmpeg, then choose your preferred Audio Output Sample Rate and number of channels. Pair this with a compatible external DAC or USB / Lightning audio interface to get bit-perfect output from your iPhone, iPad, or Mac.

Plug your USB DAC into the iPhone, iPad, or Mac (via Lightning-to-USB, USB-C, or directly), then in Settings → Audio Player → General switch to the FFmpeg codec and pick the sample rate and channel count your DAC expects.

Many audiophile DACs prefer 88.2 kHz or 96 kHz with Stereo output. Lower the Audio Output Preferred IO Buffer Duration to around 5 ms (0.005 s) for low latency, then increase it slightly if you hear glitches. Flacbox works with most class-compliant USB DACs and Lightning DACs, including offerings from AudioQuest, iFi, Chord, FiiO, Topping, and others.

Yes — Flacbox plays WMA, OGG, OPUS, APE, TTA, MPC, WV, and many other less-common formats through the bundled FFmpeg engine, even though iOS does not support them natively.

No conversion is required: drop the files into iCloud Drive, Dropbox, Google Drive, or your NAS, connect that service in Flacbox, and the files just play. Embedded tags, album art, and lyrics are read where present.

Yes — Flacbox lets you pick Mono, Stereo, Center/Left/Right, Center/Left/Right/Surround, ITU BS.775-1, 5.1 Surround, and SDDS in Settings → Audio Player → General → Audio Output Number of Channels (FFmpeg codec required).

This is useful with external multi-channel DACs and AV receivers. Most users should stick to Stereo unless they have specific multi-channel hardware connected, since the iPhone’s built-in speakers and most headphones are stereo only.

Yes — Flacbox offers pitch correction in a wide range from -1000 to +1000 cents, configurable in Settings → Audio Player → Pitch Correction.

Use Precise Mode (tap the configuration icon in the top-right corner) for finer adjustments. Pitch correction is available in the FFmpeg codec path, so make sure you’ve selected FFmpeg under Settings → Audio Player → General → Audio Codec to access it.

Open the Playlists section, tap the “…” menu, select “Import Playlist,” then pick the .m3u, .m3u8, or .cue file from your cloud storage or device.

The app parses the playlist file, locates each referenced track on your storage, and creates a real playlist in your music library. Supported file extensions are M3U, M3U8, and CUE. Make sure the paths inside the playlist file match where the audio files actually live on the storage.

Read the full guide

Open the playlist, tap the “…” menu, and choose “Export Songs List” — you can save the result as M3U, M3U8, CSV, or TXT.

The same action is also available for albums, artists, genres, the Recents list, and the Favorites list. Use M3U for re-importing into other players, CSV for spreadsheets, and TXT for a simple, human-readable copy.

Read the full guide

Open the audio player, tap the AirPlay or Chromecast icon, and pick your speaker, TV, or AV receiver from the list.

Both AirPlay 2 and Google Chromecast are supported on iOS — the buttons can be added to the main player screen via Settings → Audio Player → Personalization → Main Screen Actions. Some hi-res formats may need to be transcoded for Chromecast playback. AirPlay 2 also lets you play to multiple HomePods or Apple TVs at the same time.

Enable widget updates in Settings → Widgets, then long-press your Home Screen or Lock Screen, tap “+”, search “Flacbox,” and pick a widget size.

The widget shows the currently playing track with artwork and basic info. Because widget refreshes use a small amount of energy, the Enable Widgets toggle is off by default — turn it on only if you actively use widgets. Widgets work on iPhone and iPad Home Screen and Lock Screen, and also in the macOS Notification Center.

Tap “…” on any track and choose Edit Audio Tags to open the built-in tags editor — you can change title, artist, album, year, genre, lyrics, album cover, and more.

For online files, Flacbox temporarily downloads the track, lets you edit, and then re-uploads it to the cloud service. You can configure this behavior in Settings → Audio Tags Editor — including album-cover scaling, whether changes are written back to cloud files automatically, and which buttons appear on the editor’s main screen. For deeper batch editing across many files at once, install our companion app Evertag. Learn more about Evertag.

Open Settings → Library → Album Covers, enable “Load Album Covers for Online Files” and “Search in the Folder,” then bump up Cover Quality if needed — the app will pull embedded artwork from your cloud files and use JPEG / PNG images stored alongside your audio files when no embedded cover exists.

You can also tap Delete All to clear the cover cache and force a refresh. To replace a specific cover manually, tap "…" → Edit Image on the album, playlist, or track and pick a new image from your photo library, the Files app, or one of your connected cloud services. For deeper control over the artwork stored inside the audio file itself, use Edit Audio Tags or our companion app Evertag.

On any track, tap “…” → Delete from Music Library — this removes the song from your library database but leaves the file untouched in cloud storage and Local Files.

To also remove the file from the cloud or local device, choose Delete from Cloud Service or Delete from Local Files instead. These destructive actions cannot be undone, so be careful when you have multiple files selected.

Open Settings → Backup & Restore, select what to include (Database, Album Covers, Settings), tap “Backup Application Data,” and save the backup file — open it on another device to restore.

The backup contains your music library entries, playlists, ratings, favorites, settings, and album cover cache. It does not include offline-downloaded audio files, to keep the file size manageable. Move the backup file to the new device via iCloud Drive, AirDrop, or any connected cloud service, then open it in Flacbox to apply.

Full guide: how to transfer your music library between devices

All Flacbox Premium plans — lifetime, monthly, and annual — work with Apple Family Sharing, so anyone in your family group can install Flacbox and use Premium at no extra cost.

Set up Family Sharing in iOS / macOS Settings → Family, then have each family member install Flacbox from the App Store and run it once while signed in to their own Apple ID. Premium is recognized automatically within a minute. The same plan is shared between iPhone, iPad, and Mac for every family member.

Open iOS or macOS Settings → [your name] → Subscriptions, find Flacbox, and tap Cancel Subscription — your Premium features stay active until the end of the current billing period.

Lifetime in-app purchases are not subscriptions and do not need to be cancelled. For refunds, use Apple’s Report a Problem page (reportaproblem.apple.com) — refunds are issued by Apple, not by Everappz.

Open Settings → Passcode, tap Enable, and pick a 4-digit code — you’ll be prompted to enter it every time the app launches.

Flacbox uses a fixed 4-digit numeric passcode. The passcode prevents anyone with access to your device from opening Flacbox and browsing your connected cloud accounts, downloaded files, and library. Combine it with iOS Face ID / Touch ID on the device for extra protection.

Open Settings → Personalization → Color Scheme, then pick Dark, Light, or Default (which follows your system appearance).

You can also pick alternate app icons in Settings → Personalization → Application Icon (Premium), and choose a blurred album cover as the app background under Background Style.

Open the audio player, tap the Speed control, and drag the slider — speed is adjustable from 0.02× to 3.00×.

You can also change the default speed in Settings → Audio Player → Playback Speed. Tap the configuration icon in the top-right corner to switch to precise mode for very fine adjustments — handy for audiobooks, lectures, and language-learning content.

Open Settings → Audio Player → Sleep Timer, turn it on, and choose how long you want music to play before it stops.

You can also enable the Sleep Timer button directly on the audio player screen by adding it via Settings → Audio Player → Personalization → Main Screen Actions. Tap the configuration icon in the top-right corner of the Sleep Timer screen to enable precise minute-by-minute adjustments.

Yes — once you’ve downloaded music or enabled offline mode for a folder, Flacbox plays everything fully offline.

Offline content lives under Local Files and continues to work in airplane mode, on flights, and anywhere without Wi-Fi or cellular data. Cloud-only tracks (those you haven’t downloaded) will be greyed out until you regain a connection. For trips, enable Offline Mode for the relevant folders or download specific albums and playlists before you go.

Yes — Flacbox supports Last.fm scrobbling, so every track you play is automatically logged to your Last.fm profile.

Connect your Last.fm account from the Connections → Other Services section. Once connected, all playback statistics are sent to Last.fm in the background. You can then visit your Last.fm profile to see listening trends, weekly top artists, and personalized recommendations.

Read the full setup guide

Open Settings → Language, pick from over 120 supported languages, then restart the app for the change to take effect.

The app supports localizations including English, French, German, Spanish, Italian, Portuguese, Russian, Ukrainian, Polish, Dutch, Arabic, Hebrew, Hindi, Japanese, Korean, Chinese (Simplified and Traditional), Vietnamese, Turkish, and many more. Choose Default to follow the device’s language setting automatically. After selecting a new language, fully quit Flacbox and reopen it so every screen redraws with the new translations.

Tap the magnifying-glass icon in any list — Music Library, Playlists, Albums, Artists, Genres, or inside a folder — and type a name to filter results instantly.

Search is local and works fully offline against your library database, so results appear as you type even on slow networks. You can also search inside a specific playlist, album, or folder to find a single track among hundreds. Tracks, albums, artists, genres, composers, and folders are all searchable.

Yes — Flacbox plays through any audio output your iPhone, iPad, or Mac can use: built-in speakers, wired headphones, Bluetooth devices (AirPods, Beats, Sony, Bose, etc.), and USB / Lightning DACs.

For Hi-Res output to an external DAC, switch the audio codec to FFmpeg in Settings → Audio Player → General and pick the appropriate Audio Output Sample Rate and number of channels. AirPods’ on-stem controls (play / pause, next / previous) work as expected, and the lock-screen controls can be customized in Settings → Audio Player → Personalization → Playback Controls on the Lock Screen.

Plug the drive into your iPhone or iPad via the Lightning-to-USB or USB-C adapter, then in Flacbox open Local Files → Files on This iPhone → Open Folder, navigate to the drive, and pick the music folder.

Flacbox plays files directly from the drive without copying them to internal storage, which is useful for very large lossless libraries. You can also import tracks to the music library or add them to playlists in the same way. The app supports Apple Certified card readers and iXpand Flash Drives — for iXpand, insert it into the Lightning port and the drive appears automatically in the Connections screen. See the full step-by-step instructions in How to connect a USB flash drive to iPhone and listen to music.

Most sync issues are caused by an expired auth token, app backgrounding, or no active internet connection — open Connections, re-authorize the service, then run sync manually from Settings → Library → Online Synchronization.

Online sync runs only when the app is in the foreground, so syncing a large library can take a while. To speed it up, keep Flacbox open, plug your device into power, and enable Settings → Screen → Always Active. For very large libraries, run sync on the desktop version of the app and transfer the result to iOS using Backup & Restore.

Open Settings → Send Feedback to email our support team directly from the app, with diagnostic info attached automatically.

You can also visit the Help Center, browse the How-to guides, or check the broader FAQ for self-serve answers. We typically reply within one business day.