Play on your pad
Your phone's microphone listens while you play naturally.
For drummers who practise on a pad
You can’t feel where
your edge is.
Don’t repeat your
mistakes faster.
Alone on a pad, your feel lags your ability. one&a hears every take and makes the call — repeat, move up, or step back — and the coaching runs through Claude, which you connect yourself.
Push the edge of control instead. one&a hears every take and makes the call — repeat, move up, or step back — and the coaching runs through Claude, which you connect yourself.
See it in action
Play. Measure.
Know what’s next.
One short take turns into a clear next tempo — without charts to decode or numbers to second-guess.
Beta design flow today. Real practice footage is next.
How it works
Four steps. One honest next move.
Every hit measured
one&a checks the timing and evenness of each stroke. Honest numbers — when it can’t hear you cleanly, it says so instead of guessing.
Coach it in Claude
Connect one&a to Claude and reach your takes and sessions from inside it. Ask what to do next — repeat, move up or step back — from your actual playing.
Next session on your pad
Set it up in Claude, and it’s waiting when you pick up the sticks.
What it does
Measured, not guessed
Honest measurement
Timing and evenness of every stroke, from your phone’s mic. Nothing to wire up.
Your clean tempo, tracked
The fastest tempo you can still play consistently. one&a finds it and shows how it moves, session to session.
It tells you when it can’t tell
If the audio isn’t clean enough to score, it says so instead of guessing. It measures timing and evenness — it won’t judge your grip or musicality. That’s your teacher’s job.
The open part
Coached through Claude — you’re driving
The pad app measures — that part’s solid. The coaching is the open part. You already use Claude; connect one&a to it, and you reach your takes, sessions and exercises from inside Claude: ask what to work on from your actual playing, and set up your next session before you pick up the sticks.
The pad measures. You and Claude decide.
How far a tool like Claude can take your practice is genuinely what I’m finding out — come find out with me.
Honest by design
No guesses dressed up as coaching.
- If the audio can't be trusted, one&a says so.
- One score and one thing to fix — not a wall of numbers.
- Timing and dynamics on a practice pad. Your grip, posture and musicality stay with your teacher.
Free beta
Everything included. No card required.
Free while it’s this early.
€0 while in beta
- Every practice session
- Adaptive tempo guidance
- Full progress history
Free beta
Be first to find your clean tempo.
Tell us a little about your practice setup. We'll invite the right testers as iPhone and Android access opens.
01No marketing unless you opt in.
02No card.
03Every beta feature included.
FAQ
Questions, answered
What is a “clean tempo”?
The fastest tempo where your timing is still consistent enough to build good habits. one&a finds it, tracks it and helps you raise it.
When does one&a tell me to speed up?
When your recent takes show stable timing at the current tempo. If accuracy falls apart after a jump, it steps you back.
Do I need a drum kit?
No. A practice pad, sticks and your phone are enough. To sign in you’ll need a Google account (Google-only for now), and for the coaching side, a Claude account.
Will the AI just give me wrong advice?
The measurement isn’t AI guessing: your timing and evenness are measured on the pad, and when the mic can’t hear you cleanly, it says so instead of scoring. The coaching is a conversation you drive in Claude, from your real takes — not a verdict. And it won’t replace your teacher.
What does Claude see?
You connect one&a to Claude yourself. From inside Claude you reach your own takes, sessions and exercises, so the coaching works from what you actually played. You’re driving the conversation.
Is the beta really free?
Yes — every feature, no card. Free while it’s this early.