# BTR AMP

> The hi-res, offline music player for iPhone and iPad built for 50,000+ song libraries — plays virtually any audio format, lossless to hi-res and DSD up to DSD1024, with custom tabs, smart playlists, and CarPlay.

Rated 4.7 from 1,400+ ratings on the App Store: https://apps.apple.com/us/app/btr-amp/id1489180128?mt=8&ct=btrlabscom

## Core pages

- [Home](https://www.btrlabs.com/): BTR AMP — a hi-res, offline music player for iPhone & iPad built for huge libraries.
- [Features](https://www.btrlabs.com/features/): Full feature breakdown: FLAC, DSD & hi-res playback, custom tabs, smart playlists, CarPlay, USB DAC, and iTunes-free transfer.
- [Formats](https://www.btrlabs.com/formats/): Every audio format BTR AMP plays — hi-res, lossless, and lossy — with a dedicated page per format.
- [About](https://www.btrlabs.com/about/): About BTR AMP and BTR Labs.
- [Support](https://www.btrlabs.com/support/): Get help and contact support.
- [Contact](https://www.btrlabs.com/contact/): Reach the BTR Labs team.
- [Press](https://www.btrlabs.com/press/): Press and media resources.
- [Docs & FAQ](https://www.btrlabs.com/docs/): Product how-tos and frequently asked questions.
- [Release Notes](https://www.btrlabs.com/releases/): Version history and what changed in each update.
- [Privacy Policy](https://www.btrlabs.com/privacy/): How BTR AMP handles your data.
- [Terms of Service](https://www.btrlabs.com/termsofservice/): Terms governing use of BTR AMP.
- [Pricing (machine-readable)](https://www.btrlabs.com/pricing.md): Structured pricing data: free tier, Pro subscription options, and lifetime purchase.

## Formats

- [FLAC](https://www.btrlabs.com/formats/flac/): BTR AMP is an iOS FLAC player for iPhone and iPad — plays FLAC natively up to 96kHz/24-bit and beyond, no conversion, with on-device tag editing and iTunes-free transfer.
- [DSD](https://www.btrlabs.com/formats/dsd/): BTR AMP is an iOS DSD player for iPhone and iPad — every rate from DSD64 to DSD1024, bit-perfect DoP output to USB DACs or 352.8 kHz PCM conversion on any other output.
- [MP3](https://www.btrlabs.com/formats/mp3/): BTR AMP is an iOS MP3 player built for big collections — 50,000+ songs without lag, on-device ID3 editing, custom tabs, and transfer over Wi-Fi with no iTunes required.
- [OGG Vorbis & Opus](https://www.btrlabs.com/formats/ogg-vorbis/): BTR AMP is an iOS OGG Vorbis player that also plays Opus — .ogg and .opus files play natively on iPhone and iPad with on-device tag editing, no conversion needed.
- [ALAC](https://www.btrlabs.com/formats/alac/): BTR AMP plays ALAC (Apple Lossless) alongside FLAC and every other format — one library for iTunes rips and everything else, with on-device tag editing.
- [AIFF](https://www.btrlabs.com/formats/aiff/): BTR AMP plays AIFF on iPhone and iPad — uncompressed audio with full tag support, hi-res playback via USB DAC, and file management built for large files.
- [APE](https://www.btrlabs.com/formats/ape/): BTR AMP plays APE (Monkey's Audio) files on iPhone and iPad natively — no conversion to FLAC required, with on-device APE tag editing and gapless playback.
- [WavPack](https://www.btrlabs.com/formats/wavpack/): BTR AMP plays WavPack (.wv) files natively on iPhone and iPad — lossless playback with on-device tag editing, in one library with every other format.
- [Musepack](https://www.btrlabs.com/formats/musepack/): BTR AMP plays Musepack (.mpc) files on iPhone and iPad natively — with ReplayGain volume normalization and on-device tag editing, no re-encoding needed.
- [TTA](https://www.btrlabs.com/formats/tta/): BTR AMP plays TTA (True Audio) files natively on iPhone and iPad — lossless playback with on-device ID3 tag editing, no conversion required.
- [AAC](https://www.btrlabs.com/formats/aac/): BTR AMP plays AAC on iPhone with the organization the Music app lacks — custom tabs, smart playlists, on-device tag editing, and 50,000+ song libraries without lag.
- [M4A](https://www.btrlabs.com/formats/m4a/): BTR AMP plays M4A, M4B, and MP4 audio on iPhone — including M4B audiobooks with resume, variable speed, and a sleep timer, plus on-device MP4 tag editing.

## Guides

- [Should You Convert DSD to FLAC?](https://www.btrlabs.com/guides/convert-dsd-to-flac/): Converting DSD albums to hi-res FLAC cuts file sizes by 55–77%, extends battery life, and loses nothing audible. When to convert, what settings to use, and when to leave DSD alone.
- [How to Play DSD Files on iPhone (DSD64–DSD1024)](https://www.btrlabs.com/guides/how-to-play-dsd-files-on-iphone/): The iPhone can't play DSD natively. Here's how to play DSD64–DSD1024 files on iOS — bit-perfect over DoP with a USB DAC, or converted to high-resolution PCM — step by step.
- [The Best Offline Music Player for iPhone in 2026](https://www.btrlabs.com/guides/best-offline-music-player-for-iphone/): A practical comparison of the best offline music player apps for iPhone — BTR AMP, Doppler, Evermusic, Flacbox, foobar2000, and VLC — by formats, library size, CarPlay, and price.
- [How to Play FLAC on iPhone (2026)](https://www.btrlabs.com/guides/how-to-play-flac-on-iphone/): The iPhone's built-in Music app can't play FLAC. Here are the two ways that work — a FLAC player app, or converting to ALAC — with step-by-step instructions.
- [How to Organize a 50,000-Song Music Library on iPhone](https://www.btrlabs.com/guides/organize-50000-song-library-ios/): A working system for huge music libraries on iOS: metadata hygiene, custom navigation, rules-based smart playlists, custom tags, and volume normalization.
- [How to Transfer Music to iPhone Without iTunes (2026)](https://www.btrlabs.com/guides/transfer-music-to-iphone-without-itunes/): Five ways to get music onto an iPhone with no iTunes and no cable: Wi-Fi transfer in a browser, WebDAV, SMB, cloud drives, and AirDrop — step by step.

## Comparisons

- [BTR AMP vs Apple Music: Which Should You Use for Your Own Files?](https://www.btrlabs.com/compare/btr-amp-vs-apple-music/): Apple Music is a streaming catalog; BTR AMP plays files you own. How they compare on FLAC support, offline listening, library organization, CarPlay, and price.
- [BTR AMP vs Doppler: One-Time Purchase or Power Tools?](https://www.btrlabs.com/compare/btr-amp-vs-doppler/): Doppler is a beautifully designed $9 one-time-purchase music player; BTR AMP is built for huge libraries. Which offline player fits your collection?
- [BTR AMP vs Evermusic: Offline Library or Cloud Streamer?](https://www.btrlabs.com/compare/btr-amp-vs-evermusic/): Evermusic streams your cloud library to iPhone; BTR AMP keeps it local and offline-first. How they compare on organization, formats, CarPlay, and pricing.
- [BTR AMP vs Flacbox: Two Hi-Res Players Compared](https://www.btrlabs.com/compare/btr-amp-vs-flacbox/): Flacbox streams hi-res audio from cloud and NAS; BTR AMP is an offline-first library with bit-perfect DSD, custom tabs, and smart playlists. Formats, CarPlay, and pricing compared.
- [BTR AMP vs foobar2000: Free Utility vs Full Library App](https://www.btrlabs.com/compare/btr-amp-vs-foobar2000/): foobar2000 mobile is free, plays everything, and streams from servers — but skips CarPlay and modern organization. How it compares with BTR AMP on iPhone.
- [BTR AMP vs VLC: Media Utility or Music Library?](https://www.btrlabs.com/compare/btr-amp-vs-vlc/): VLC plays nearly anything for free; BTR AMP is built to be a music library. How they compare for offline music on iPhone: organization, metadata, CarPlay, and price.

## Docs & FAQ

- [AutoSync](https://www.btrlabs.com/docs/autosync/): Create Sync Jobs that keep your device synced with files on your remote servers, automatically in the background.
- [Getting Started: Importing Your Music Files](https://www.btrlabs.com/docs/getting-started-importing-music/): The simplest way to get your music library onto your iPhone or iPad — plus every other option, organized by where your files live.
- [How do I use the Custom URL Scheme to start a download sync?](https://www.btrlabs.com/docs/faq-connect-custom-url-scheme-initiate-download/): Version 10.1 introduced support for a Custom URL Scheme and an operation that can be initiated via that scheme: starting a download synchronization. If you are regularly grabbing all new audio files…
- [How does BTR AMP choose which cover art to display?](https://www.btrlabs.com/docs/faq-cover-art-selection/): Learn how BTR AMP selects cover art for songs, albums, artists, and folders. Understand artwork priority, overrides, caching, and customization options.
- [How To: M3U Playlist Files](https://www.btrlabs.com/docs/how-to-m3u-playlist-files/): Learn how BTR AMP M3U playlist file support works
- [iOS Music App Playback Mode](https://www.btrlabs.com/docs/ios-music-app-playback-mode/): How BTR AMP handles play queues that mix DRM/iTunes songs with your local files.
- [Is BTR AMP a subscription app?](https://www.btrlabs.com/docs/faq-is-a-subscription-app/): Q: Is BTR AMP a subscription-based app? A: BTR AMP is a paid app that offers both a ONE TIME PAYMENT option (Lifetime Pro) and a PAY AS YOU GO option (Weekly, Monthly and Yearly Pro – i.e.…
- [Volume Normalization (ReplayGain & Sound Check)](https://www.btrlabs.com/docs/volume-normalization/): How BTR AMP reads ReplayGain and Sound Check data so every song plays at a consistent loudness.
- [Why is my compilation album split into multiple albums?](https://www.btrlabs.com/docs/faq-library-breaks-my-compilation-album-into-multiple-albums/): Background BTR AMP creates Albums based on the following metadata (i.e., ID3 tags) from your audio file(s): ALBUM_NAME, ALBUM_ARTIST, FOLDER_PATH If your audio files have a blank/empty ALBUM_ARTIST…

## Release notes

- [BTR AMP v22.0 – Hi-Res DSD Playback and a Fresh New Look](https://www.btrlabs.com/releases/v22-0-dsd-playback-and-waves-midnight/): Version 22.0 introduces hi-res DSD playback (DSD64–DSD1024) with bit-perfect DoP output to compatible DACs, plus the new Waves Midnight app icon and a redesigned launch screen.
- [BTR AMP v21.3 – Tap-to-Seek and Tracking Controls](https://www.btrlabs.com/releases/v21-3-tap-to-seek-and-tracking-controls/): Seek by tapping anywhere on the progress bar, optional controls to turn off history tracking, and a cleaner, more reliable player.
- [BTR AMP v21.2 – Custom Playlist Cover Art](https://www.btrlabs.com/releases/v21-2-custom-playlist-cover-art/): File playlists can now show custom cover art, with smarter synced-lyrics handling, album-order playback, and lower memory use on older devices.
- [BTR AMP v21.1 – Custom Lyrics for iTunes Tracks](https://www.btrlabs.com/releases/v21-1-custom-lyrics-for-itunes-tracks/): Add your own synced lyrics to any song — including iTunes Library tracks — plus clearer playback errors, more reliable file shares, and a big batch of stability fixes.
- [BTR AMP v21.0 – Karaoke Mode and Auto-Scrolling Lyrics](https://www.btrlabs.com/releases/v21-0-karaoke-mode-and-auto-scrolling-lyrics/): BTR AMP 21 is here with one of the biggest updates yet. This release completely redesigns the player screen from the ground up, adds a powerful new audio mixer with 10-band EQ presets and per-track…
- [BTR AMP v20.0 – OneDrive and Last.FM are now here](https://www.btrlabs.com/releases/v20-0-onedrive-and-last-fm-are-now-here/): New OneDrive, updated Google Drive, and new Last.FM integration is here!
- [BTR AMP v19.4 – Alternative App Icons are now here](https://www.btrlabs.com/releases/v19-4-alt-app-icons/): Chose from over 12 alternative app icons for BTR AMP!
- [BTR AMP v19.3 – Liquid Glass and App Icon improvements](https://www.btrlabs.com/releases/v19-3-ios-26-support/): Liquid Glass and improved App Icon support
- [BTR AMP v19.2 – In Progress Albums](https://www.btrlabs.com/releases/v19-2-in-progress-albums/): BTR AMP resume album playback
- [BTR AMP v19.1 – Audiobooks and Podcasts](https://www.btrlabs.com/releases/v19-1/): NEW: iTunes Library audiobooks and podcasts; IMPROVED: unlimited play queue; FIXED: flashing cover…
- [BTR AMP v19.0 – Now in 32 More Languages](https://www.btrlabs.com/releases/v19-0/): NEW: localized/translated into 32 additional languages; visible action buttons…
- [BTR AMP v18.5 – Redesigned Album Screen](https://www.btrlabs.com/releases/v18-5/): NEW: Album Screen redesign; IMPROVED: Featured layout; FIXED: M3U Playlists, iTunes Library Import, Player Engine, Tabs, and…
- [BTR AMP v18.4 – M3U Playlist Support](https://www.btrlabs.com/releases/v18-4/): NEW: M3U Playlist Files; IMPROVED: Playlist sorts, Folder Paths; Battery usage; FIXED: Player…
- [BTR AMP v18.3 – Import & Export Your Setup](https://www.btrlabs.com/releases/v18-3/): NEW: Settings Import/Export, Smart Playlists Import/Export; IMPROVED: Play Queue shuffling, CarPlay images, playlist specific Featured sections and Shortcut tabs; FIXED: CarPlay shuffle…
- [BTR AMP v18.2 – Richer Playlist Screen](https://www.btrlabs.com/releases/v18-2/): NEW: Playlist related tabs, Playlist song reordering; IMPROVED: Playlist edit, copy, and delete; FIXED: player…
- [BTR AMP v18.1 – Preferred Language and Year Sorting](https://www.btrlabs.com/releases/v18-1/): NEW: Preferred Language setting, Song sort orders; IMPROVED: Metadata Editor; FIXED…
- [BTR AMP v18.0: Enhanced Freemium Model and Pro Features](https://www.btrlabs.com/releases/v18-0/): Version 18.0 introduces a re-worked freemium model for BTR AMP, opening up access to the best offline music player on iOS. Everyone can now use BTR AMP to play their music, while only paid users have…
- [BTR AMP v17.1 – Custom Art Your Way – Now Available in the AppStore](https://www.btrlabs.com/releases/v17-1-custom-art-your-way/): Version 17.1 delivers one new feature, along with numerous usability enhancements and bug fixes.
- [BTR AMP v17.0 – Custom Lists Your Way – Now Available in the AppStore](https://www.btrlabs.com/releases/v17-0-custom-lists-your-way/): Version 17.0 delivers major enhancements to library management, along with numerous usability enhancements and bug fixes.
- [BTR AMP v16.2 – Volume Normalization Modes](https://www.btrlabs.com/releases/v16-2/): Version 16.2 includes:
- [BTR AMP v16.1 – Mixer and CarPlay Improvements](https://www.btrlabs.com/releases/v16-1/): Version 16.1 includes:
- [BTR AMP v16.0 – External File Playback – Now Available in the AppStore](https://www.btrlabs.com/releases/v16-0-external-file-playback/): New support for external audio files via USB and elsewhere on your device.  New support for custom theme colors.  Various usability enhancements and bug fixes.
- [BTR AMP v15.3 – Simply Better – Now Available in the AppStore](https://www.btrlabs.com/releases/v15-3-simply-better/): Version 15.3 includes numerous bug fixes and usability…
- [BTR AMP v15.2 – WebDAV Client – Now Available in the AppStore](https://www.btrlabs.com/releases/v15-2-webdav-client/): Version 15.2 includes: a) WebDAV client; b) AutoSync – new Sync Types: “Download Missing” and “Download…
- [BTR AMP v15.1 – CarPlay Documents Tab – Now Available in the AppStore](https://www.btrlabs.com/releases/v15-1-carplay-documents-tab/): Version 15.1 includes: a) CarPlay Documents Tab; b) Song Lyrics; c) Player Screen – Cover Art – swipe left or right to play the next or previous song – tap/short-press now executes play or pause; d)…
- [BTR AMP v15.0 – New Audio Codecs – Now Available in the AppStore](https://www.btrlabs.com/releases/v15-0-new-audio-codecs/): Support for new audio codecs: APE, MPC, TTA, WV, OGG OPUS and VORBIS.  Improved support for FLAC files.  New support for editing and using sort order metadata.  Improved Siri responses when searching…
- [BTR AMP v14.0 – AutoSync – Now Available in the AppStore](https://www.btrlabs.com/releases/v14-0-autosync/): Version 14.0 introduces one major new feature, AutoSync, along with various bug fixes and performance enhancements. AutoSync gives you the ability to create Sync Jobs that will periodically run in…
- [BTR AMP v13.0 – Normalizing Excellence – Now Available in the AppStore](https://www.btrlabs.com/releases/v13-0-normalizing-excellence/): Version 13.0 is another big release that we’re very excited to bring to you. This release includes: German language translation now available Audio Engine Volume Normalization – ReplayGain and Sound…
- [BTR AMP v12.0 – To Mix or Not To Mix – Now Available in the AppStore](https://www.btrlabs.com/releases/v12-0-to-mix-or-not-to-mix/): Version 12.0 is a big release that we’re very excited to bring to you, including: Gapless Playback, Crossfade Playback, improved Menu system, enhanced Cover Art editing and viewing, reworked Play…
- [BTR AMP v11.0 – A Brand New CarPlay Experience](https://www.btrlabs.com/releases/v11-0-brand-new-carplay-experience/): BTR AMP's CarPlay module was completely rewritten from the ground up for the best offline-music experience on the road.
- [BTR AMP v10.3 – Go To Artist & Folder Shortcuts](https://www.btrlabs.com/releases/v10-3-go-to-artist-and-folder-shortcuts/): Adds Go To Artist and Go To Folder shortcuts, plus a round of fixes for tags, CarPlay, Google Drive, and large-library performance.
- [BTR AMP v10.2 – Condensed Artist Sorting](https://www.btrlabs.com/releases/v10-2-condensed-artist-sorting/): A polishing release with a new Condensed Artist sort, an Album Artists filter, CarPlay favorites ordering, and download indicators.
- [BTR AMP v10.1 – Listen To Me Clearer – Now Available in the AppStore](https://www.btrlabs.com/releases/v10-1-listen-to-me-clearer/): Version 10.1 is a bug fix and polishing release. This fixes a critical issue that was causing the app to unexpectedly crash, especially when working in the background (i.e., like when you were using…
- [BTR AMP v10.0 – Listen To Me – Now Available in the AppStore](https://www.btrlabs.com/releases/v10-0-listen-to-me/): Version 10.0 brings you comprehensive support for Siri, both telling Siri to initiate playback, along with shortcuts for automating BTR AMP using the Shortcuts app. Tell Siri what playlist, album…
- [BTR AMP v9.0 – Bigger or Smaller Things – Now Available in the AppStore](https://www.btrlabs.com/releases/v9-0-bigger-or-smaller-things/): Version 9.0 provides full support for iOS’s Dynamic Type (i.e., scalable text). Users who have difficulty reading small text on their device can increase the size of text, while other users who…
- [BTR AMP v8.0 – Shinier Things – Now Available in the AppStore](https://www.btrlabs.com/releases/v8-0-shinier-things/): Version 8.0 introduces two new features that give you even more control over BTR AMP’s look and feel.  The first enables you to customize when iOS Dark Mode is applied (e.g., Automatic, Never, and…
- [BTR AMP v7.0 – Custom Tags – Now Available in the AppStore](https://www.btrlabs.com/releases/v7-0-custom-tags/): Version 7.0 introduces another EXCLUSIVE feature… Custom Tags!   When used in conjunction with Smart Playlists (from v6), Custom Tags give you the ability to organize YOUR music library in nearly…
- [BTR AMP v6.0 – Smart Playlists – Now Available in the AppStore](https://www.btrlabs.com/releases/version-6-0-now-available/): Version 6.0 introduces Smart Playlists that work the way they are meant to work! EXCLUSIVE to BTR AMP, Smart Playlists are a set of customizable rules that automatically query YOUR music library for…
- [BTR AMP v5.0 – CarPlay – Now Available in the AppStore](https://www.btrlabs.com/releases/version-5-0-now-available/): Version 5.0 introduces three major new features: complete Apple CarPlay compatibility, built-in Google Drive connectivity for uploading/downloading music, and creation of new shortcut tabs for direct…
- [BTR AMP v4.0 – Windows SMB – Now Available in the AppStore](https://www.btrlabs.com/releases/version-4-0-now-available/): Version 4.0 is a combination of numerous new and enhanced features. New Features include: A) SMB Uploads – v3.0 introduced downloads from Mac/Windows/Linux computers – v4.0 introduces uploads to…
- [BTR AMP v3.0 – Windows SMB – Now Available in the AppStore](https://www.btrlabs.com/releases/version-3-0-now-available/): Introducing a built-in Windows SMB client under the Connect section. This allows you to download files from other computers such as your PC/Mac/Linux directly into BTR AMP by connecting via the SMB…
- [BTR AMP v2.0 – 10-Band Equalizer – Now Available in the AppStore](https://www.btrlabs.com/releases/version-2-0-now-available/): Version 2.0 of BTR AMP introduces a brand new audio engine and more importantly a 10-band equalizer with over 20 presets both combining to make YOUR music sound that much better. The equalizer is…
- [BTR AMP v1.1 – The Best Is Even Better – Now Available in the AppStore](https://www.btrlabs.com/releases/version-1-1-now-available/): This release includes a couple of bug fixes and various optimizations.
- [BTR AMP v1.0 – It Is Finally Here – Now Available in the AppStore](https://www.btrlabs.com/releases/version-1-0-now-available/): After 15+ years of thinking about creating it, 10+ years of waiting for someone else to create it, and the past 9 months of design and development work, we’re proud to announce the release of version…