Separate any song into vocals, drums and bass on the phone itself, then record over the backing track. Nothing is uploaded — it all runs on your device.
Found a problem or missing something? Tell us in the app under Settings → Send feedback and we will fix it fast.

4-stem (vocals, drums, bass, other) and 6-stem (adds guitar and piano) models, run on the phone GPU. The model downloads once, the first time you use it.
Paste a YouTube link, send one from another app with Share → underdaw, or pick a music file on your phone.
Volume and mute per instrument, key and speed change, loop a section, metronome and count-in, and the original video alongside.
Multiple tracks, loop recording that stacks a take per pass, take picking, punch recording, latency calibration and a tuner. USB audio interfaces work too.
EQ, compressor, noise gate, NAM amp models, cabinet IR, delay and reverb. Save chains as presets.
Save as WAV, FLAC or M4A and share. Match -14 LUFS (YouTube, Spotify) or -16 LUFS (Apple Music).




Installing from ONE store skips these steps and keeps the app updated for you.
From ONE store, or as an APK from this page. They are the same app, so you can switch from the APK to ONE store and keep your projects and songs. It is not on Google Play yet.
ONE store updates the app for you. If you installed the APK, download the new version from this page and install it over the old one. Your projects and songs stay.
No. Separation, recording and export all run on the phone. The internet is only used to fetch a song from a link or to download the model the first time.
underdaw-mobile-1.0.1.apk
92ad74fd238e0cfeb833a0ede6298a5912931bd4ac22ec69fa9943649a1de5d2
Video editing, piano roll and VST plugins — underdaw for Windows is the full release.
See the PC app