MonoBand: AI Stem Splitter

MonoBand turns any song you own into a full practice and remix studio — on your iPhone, iPad, and in your car with CarPlay.
Split it, sing it, read the lyrics, learn the chords. No internet, no subscription.

Using an on-device AI model running on Apple silicon, MonoBand separates a track into 6 independent instruments — vocals, drums, bass, guitar, piano, and "other" — in minutes. Then it gives you everything you need to learn, practice, and create:

SEPARATE & MIX 6-stem AI separation, 100% on device Per-stem volume, instant solo, and mute 3-band EQ and stereo pan on every channel Per-channel and full-song waveforms — tap to jump anywhere Non-destructive clip editor: split, move, mute, and fade regions

PRACTICE Transpose ±24 semitones without changing tempo Change speed without changing pitch Draw an A > B practice loop right on the waveform and drag its edges Section markers (verse, chorus, solo) as flags on the timeline Automatic chord detection, synced to playback and transposed with you Automatic BPM and key detection

LYRICS & TRANSLATION Read the lyrics off the separated vocal — not the full mix, so recognition is far better Lyrics scroll in time with the music, with the current line highlighted Show a translation under each line, in the language you choose Built-in editor: fix a word, split or merge lines, nudge timings, replay any line Everything runs on your device — no audio or text is ever uploaded

KARAOKE Any song in your library becomes karaoke — the melody comes from its own vocal stem Sing along and see your pitch land on the note, with a live score and streaks Stars and a summary at the end of every take Scrub back to a tricky phrase without restarting

CARPLAY Browse your songs, playlists, and favorites on the car display One-tap Karaoke — mute the vocals and sing along Practice Mix: mute or solo any instrument while you drive Loop the current song, restart it, and pick up where you left off

RECORD Record up to 4 of your own takes over the song Vocal effects: reverb, delay, compressor, noise gate, low-cut, distortion Per-device recording alignment and per-take timing shift Non-destructive trim on your recordings

LIBRARY & PLAYBACK Playlists, folders, and favorites — with continuous play, shuffle, and repeat Playback resumes exactly where you left off, per song AirPlay 2 and Lock Screen / Control Center playback with next/previous Export individual stems, the full mix, just the loop, or an aligned multitrack ZIP for your DAW (WAV / MP3) Back up your library — or just the songs you pick — into a single ZIP, and import it back on any device; songs you already have are detected and skipped Light and Dark mode · Available in 8 languages

PRIVACY FIRST Everything happens on your device. MonoBand has no servers, no analytics, no third-party tracking, and no account. Your songs, stems, lyrics, and recordings never leave your phone.

Import audio from Files, the Photos app (videos too), your Music library, or record fresh. Note: DRM-protected streams (Apple Music, Spotify) cannot be imported — use songs you own.

Made with care for musicians, learners, and producers.