Beatalyzer by vonba · the metronome coach for iPhone and Android
Beatalyzer: the rhythm trainer that catches your drift.
For any musician who wants to play in time. Your metronome just clicks. Beatalyzer listens back, catches every early and late note while you play, and shows you after the take exactly where you drifted.
- Live early, late or on the beat, note by note
- After a score, a verdict and what to fix
- Any instrument tap, MIDI or microphone
Watch the Beatalyzer trailer
33 seconds on why your metronome isn’t enough.
A metronome that talks back
A click can’t hear you drift. Beatalyzer can, twice: once while you play, and again when you stop.
Caught in the act
The live meter marks every note early, late or on the beat as you play it. Rush a fill and you see it before the bar is over.
The verdict
Your vonba score, what went well, what to improve and what would raise the score next time. If you rush consistently, it says so.
Three steps to getting caught
No setup marathon. Pick a tempo, play, face the music.
Pick your poison
Tempo, time signature, grid and count-in live in one bar at the top. Choose quarter notes, eighths, sixteenths, triplets, or a rudiment with its sticking.
Play. It’s watching.
Preview the pattern, then record. A live meter flags every note as early, late or on the beat while you play. No sneaking one past it. Turn the phone sideways for a clean performance layout.
Take the hit
Stop and get your vonba score, what went well, what to improve and what would raise the score next time, with charts for every beat, position and hand.
Nowhere to hide
Timing over the whole take, a running average, missed notes marked, and separate views by position in the beat, by beat in the bar, by pad and by hand. The green band is your on-beat window. Anything outside it is on you, and you’ll see exactly where you drift. No more blaming the drummer.
No instrument gets a free pass from Beatalyzer
Sticks, keys, horns or fingers on glass. If it has an attack, Beatalyzer will judge it.
Tap
Play the on-screen pads with your fingers, anywhere. Up to four pads, each assignable to a hand. Your fingers can rush too.
MIDI
Connect pads, an e-kit or a keyboard by USB or Bluetooth for the most precise timing. Rudiments grade which hand played each stroke, so your weak hand has nowhere to hide.
Mic
Acoustic drums, piano, trumpet, anything with an attack. The app listens and picks the right setting for what you play, or you choose Drums, Instrument, or Melody for a smooth single line — strings, brass, voice. Works through the speaker or with any headphones, wired or Bluetooth.
Two-handed piano
With a MIDI keyboard, find out whether your hands really land together, note by note. They don’t always. Made for Hanon-style piano exercises, both hands playing the same pattern.
The vonba score. One number for the whole take. No arguing with it.
A score you have to earn
How well you played
How many notes landed in the on-beat window, and how tightly they group.
How hard it was
Tempo, density, silent clicks, odd meters and sticking all raise the bar, against your level’s ceiling.
How long you held it
Length of the take, and whether your timing held to the end.
Pick your level and the scoring follows: Beginner is forgiving and encouraging, Intermediate tightens the window, Pro demands precision, speed and stamina, and shows no mercy. Played eighths against a quarter-note grid by mistake? Beatalyzer calls it out instead of grading you note by note. Yes, it noticed.
Drills that don’t let you coast
Exercises
Tempo Increase raises the speed step by step. Beat Sequence chains steps with their own tempo, meter and pattern. Set the step time, preview, count-in and which beats click, then save your own drills to My Exercises.
Challenges
Fixed, comparable rounds: the 3-min Tempo Grid, the 5-min Click Gaps across odd meters and sparse clicks, and the Grand Tour of five classic rudiments. Your bests go to the Hall of Fame, per input. Beat them or live with them.
History
Every session is saved on the device. Open one later for the full analysis, and watch your timing tighten up.
Want it even more detailed?
Beatalyzer’s own feedback already speaks plainly: what went well, what to improve, what would raise the score. Optionally, let an AI write it for you using your own key from OpenAI, Anthropic, Google or Groq. Five voices, from an Analytical coach that digs through your take note by note to a Supportive Coach, a Snarky Smartypants roast or a Drill Sergeant. You asked for it. Keys stay on your device and are sent to nobody but the provider you chose.
Your bad takes stay between you and your phone. No account, no tracking, no analytics. Takes, history and microphone audio are analysed and kept on your phone.
Ready to get caught?
Beatalyzer for iPhone and iPad (iOS 18.4 or later) and for Android phones and tablets (Android 9 or later).