1-bit is a private, bit-exact music player for iPhone and iPad. Play your own files from a UPnP/DLNA media server, an SMB share, your personal 1-bit-bridge server, or directly from the device — no cloud, no login, no account.
SOURCES
• UPnP/DLNA media servers on your Wi-Fi — NAS, MiniDLNA, Plex, or a Chord 2Go. Found automatically; stream bit-exact, DSD included.
• SMB shares on your home network (NAS, server, shared folder).
• 1-bit-bridge — a free, open-source (MIT) companion server you run on Mac, Linux, Raspberry Pi, or Windows. TLS-fingerprint-pinned HTTPS; tap-to-pair over Bonjour or a QR code.
• Files-app imports and offline downloads — pin albums, playlists, or tracks for bit-exact playback offline.
AUDIO
• Bit-exact PCM (FLAC, WAV, AIFF, ALAC, MP3, M4A) up to the limits of your DAC.
• Bit-exact DSD via DoP for DSF and DSDIFF (.dff), up to DSD512. Requires a USB DAC that reports DoP lock (Chord Hugo 2 / Mojo 2 / Hugo TT 2, iFi, Topping, Mytek, etc.).
• Gapless transitions when adjacent tracks share format and rate.
• DAC-aware: per-DAC tuning for Chord, iFi, and other USB DACs, with anti-click rate switching and thermal-aware buffering for smooth DSD256/512.
VOICE & SIRI
• "Hey Siri, play [album, artist, or playlist] on 1-bit" — on your phone, hands-free, or in the car.
• Shuffle your library or play your downloads from Siri, Shortcuts, and Spotlight.
HOME MIXES (WITH A BRIDGE)
• Your bridge curates mixes from your listening — Heavy Rotation, Daily Mix, On Repeat, Artist Deep Cuts, Drive Mix, Wind Down, and more. Your history stays on your own server.
OUTPUT
• Play on this device — USB DAC, AirPods, AirPlay 2, or built-in.
• Cast to a DLNA renderer such as a Chord 2Go — the track streams straight from the source, keeping your iPhone out of the path.
CARPLAY
• Browse Recently Added, Recently Played, Artists, Albums, Playlists, and Downloads, A–Z indexed.
• Voice search and one-tap Shuffle Library; Now Playing shows what's next with steering-wheel transport, shuffle, and repeat.
• PCM only over CarPlay — DSD is hidden to avoid head-unit incompatibility.
LIBRARY
• Fast library that handles 50,000+ tracks across SMB, bridge, and media-server sources.
• Search tracks, albums, and artists; filter by source; "The"-aware A–Z sorting.
• Albums, artists, and playlists with cached artwork and artist images, plus Recently Played.
• Classical metadata: composer, conductor, work, original year, BPM, and performer credits, with a "Conducted by X" album header.
• First-scan resumes overnight while on a charger.
PLAYER
• Now Playing with smooth elapsed time, signal-path readout, and artwork-derived background.
• Resume where you left off — queue and position restored after closing.
• Home-Screen widget: current track, quality, signal-path dot, and transport.
• Long-press a folder to Play, queue, play next, or make a playlist — no scan needed.
• Lock Screen, Control Center, CarPlay, and AirPlay 2 transport.
• Sleep timer (end of track or custom) and PCM crossfeed (off by default).
BRIDGE EXTRAS (OPTIONAL)
• Upscaling: your bridge serves higher-rate PCM variants of your files, made on your hardware — original always preserved bit-exact, switch mid-track. No third party sees the file.
• Atlas: optional artist and album "About" notes plus higher-quality cover art, fetched anonymously — off by default.
• Backup: optionally back up playlists and playback history to your own bridge — off by default, never shared.
PRIVACY
• No analytics, no tracking, no ads, no accounts.
• Optional lookups (Deezer artist images, Atlas metadata) are anonymous and off by default — never used for tracking.
• Passwords and tokens live in the iOS Keychain.
• Traffic stays on your LAN unless you connect to a remote bridge via Tailscale or similar.
• Built-in log viewer — logs never leave the device unless you share them.
Requires iOS 26.1 or later.
Ratings & Reviews
5.0
out of 5
1 Ratings
• Siri & voice — say "Hey Siri, play [album, artist, or playlist] on 1-bit," on your phone or hands-free in CarPlay, with voice search and shortcuts.
• Home mixes — with a paired bridge, a new Home tab serves mixes built from your listening: Heavy Rotation, Daily Mix, On Repeat, Artist Deep Cuts, and more.
• Atlas (optional, off by default) — artist and album "About" notes plus higher-quality cover art, fetched anonymously.
• Smarter library — "The"-aware A–Z sorting, performer credits, and a configurable starting page.
• Audio polish — anti-click rate switching for smoother PCM↔DSD transitions, plus Mytek Brooklyn DAC+ support.
• More reliable DLNA casting, plus stability, metadata, and performance fixes.
Version 1.7
The developer, Arsenie Coseac, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Sufficient Contrast
Information
Seller
Arsenie Coseac
Size
43.1 MB
Category
Music
Compatibility
Requires iOS 26.1 or later.
iPhone Requires iOS 26.1 or later.
iPad Requires iPadOS 26.1 or later.
Mac Requires macOS 26.1 or later and a Mac with Apple M1 chip or later.