1-bit

Changelog

Every 1-bit release for iPhone and iPad, newest first. The audio path has never changed: no transcoding, no resampling, no mixer. DSD goes out as DoP to your USB DAC; PCM goes out at the file's native rate. Each entry links to the full release notes.

Get 1-bit on the App Store →

  1. 1-bit 1.5

    the one with Chord 2Go support

    Play bit-exact to a Chord 2Go or any DLNA renderer on your network, back up playlists to your own bridge, and keep a private listening history.

    • Play to a Chord 2Go and other DLNA / UPnP renderers — the renderer fetches the audio straight from your bridge over the LAN
    • Optional per-bridge playlist backup, so playlists survive a reinstall
    • Optional per-bridge listening history, viewable on the bridge admin console
    • On-device MetricKit diagnostics that never leave the phone
    • Bridge 0.1.5 adds the DLNA / UPnP MediaServer that makes the Chord 2Go path possible

    Read the 1.5 release notes →

  2. 1-bit 1.4

    the one that goes in the car

    CarPlay on the head unit, offline downloads, an in-app log viewer, and an optional DSD-domain DSP chain.

    • CarPlay — browse, search, tap-to-play, and Now Playing on a real CarPlay app (DSD is hidden there, since DoP markers can’t survive head-unit playback)
    • Offline downloads to app-private storage, excluded from iCloud backup
    • A rolling diagnostic log viewer in Settings — stays on the device
    • DSD-domain DSP (beta): decimator, modulator, and volume stage that stay in the DSD domain
    • Bridge 0.1.4 adds public-mode hosting and CarPlay-optimised variants; deployment target moves to iOS 26.1

    Read the 1.4 release notes →

  3. 1-bit 1.3

    the one where we forgot to change the codename

    Background library scans, classical metadata, a Listening Tips guide — and an easter-egg card that still calls itself 1.2.

    • Opportunistic background scans for big libraries — runs only while charging, idle, and on Wi-Fi
    • Classical metadata: composer, conductor, and work fields, so concert recordings group correctly
    • A Listening Tips guide collecting what makes the app sound right
    • Long-press a folder to play, queue, or append without leaving the browser
    • Bridge 0.1.3 adds a Library Inspector and server-side classical extractors

    Read the 1.3 release notes →

  4. 1-bit 1.2

    too late, too soon

    Admin-approved bridge pairing, optional upscaled variants, and per-share cellular control.

    • Admin-approved pairing — bridges can require operator approval before a device joins
    • Discover-on-network pairing: tap to join, no token to type
    • Optional upscaled PCM variants, generated locally on your bridge
    • Per-share cellular gate: Always allow, Warn before streaming, or Wi-Fi only
    • A fully lock-free render path (no syscalls during the audio callback)

    Read the 1.2 release notes →

  5. 1-bit 1.1

    from the heart

    The 1-bit bridge launches — a free, open-source companion server — alongside a stack of launch-week fixes.

    • The 1-bit bridge: a free, open-source server for Mac, Windows, Linux, or Raspberry Pi, talking to the app over HTTPS instead of SMB
    • Bonjour discovery so nearby bridges show up automatically
    • A proper Settings home: theme override, alternate icons, ReplayGain on PCM, crossfeed
    • The unglamorous launch-week fixes — crash traces, a mass-delete trap on large libraries, AVAudioEngine auto-revive

    Read the 1.1 release notes →

  6. 1-bit 1.0

    1-bit is out

    The first release: an iOS music player that sends your music bit-for-bit from your NAS to your DAC.

    • Bit-exact PCM straight to a USB DAC, bypassing the iOS system mixer
    • DSD (DSF) played as DoP for native decoding on the DAC — DSD64, DSD128, DSD256
    • Library scan from an SMB share or the on-device Documents folder
    • Gapless playback, plus the fiddly bits: sample-rate renegotiation and per-DAC PLL settling

    Read the 1.0 release notes →

Bridge release notes live on the 1-bit bridge releases page . More about the app on the 1-bit page .