Files are tagged OG / A / B automatically, in the order you add them.
Compare mixes.
Anywhere, instantly.
Offline-first, no account, and instant switching. iOS is in testing now.
Drop a rough, an A, and a B — get a link to compare anywhere. No account needed.
Compare mixes.
Anywhere, instantly.
Android beta coming soon
Cold coffee
Session
Cold coffee
read-write
01
One card, every version
A session is one song and all its takes. OG, A, and B live under a single card — with BPM, key, and loudness tracked automatically. Nothing to dig through mid-session.
One session, every version.
Everything else you'd expect
Switch
Flip between takes, in sync
Switch OG, A, and B instantly while it plays. You're judging the mix, not your memory of it.
Search
Find any session, fast
Search across sessions and folders by name — no more scrolling to find the mix you’re after.
Share
Share a session in one tap
Send a link so anyone can hear the take — no app required on the other end.
Import
Import from your phone
No upload, no waiting on a connection — files save locally the moment you drop them in, ready whenever you are.
Folders
Folders for the whole project
Group sessions together so a record’s rough mixes don’t get lost in a flat list.
Focus mode
Focus mode
The player stays out of the way until you hit play — no artwork, no clutter, just the take.
Analysis
Scope, BPM, key
Oscilloscope and goniometer views alongside BPM and key — detected the moment you drop a file.
Transport
Loop, seek, and rewind
Jump to the section you’re arguing about and loop it — it stays with you even after you step away to browse.
Null is in testing now
Leave your email and I'll send you a TestFlight invite — plus you'll be first to know when Null launches publicly. One email to confirm, that's it.