Free General admission
Bring your own voice.
- The live spiral, for any sound
- The solfège game
- A 5‑second instant replay, one tap away
- Clips up to 15 seconds, with a small watermark
The app is the show.
Point your phone at a voice, an instrument or a record and Tonotopia draws what it hears as a spiral of notes, live. It's free to download, and Premium adds the rest of the show.
Opens November 2026
On iPhone and Android
Costs Free to download
Coming to the App Store and Google Play, November 2026.
Playing
- What
- Amazing Grace
- From
- Hymn tune "New Britain", 1829
- Made
- Sung line, synthesized for this page
How it works.
It listens and draws. Every note lands on a spiral: low notes in the middle, high notes toward the rim, and every note with the same name on the same spoke.
Stage plotDrawn to scale
- Low notes start in the middle. The lowest on this plot is A1, at 55 Hz.
- Every A sits on the top spoke, an octave apart: 55, 110, 220, 440, 880, 1,760, 3,520 Hz.
- One lap is one octave. The coral lap runs from A3 to A4.
- Twelve spokes, one per note name, so a chord makes the same shape in any octave.
This website is the soundcheck. Here's what the show adds.
Everything on this website runs in your browser on a simple, standard method, so it works anywhere. The app runs a native audio engine built for phones, so it catches a note quicker and does a lot more with what it hears.
Soundcheck vs. show7 lines
| Compare | On this page | In the app |
|---|---|---|
| Listening | A simple, standard method that runs in any browser | A native audio engine, built for phones |
| Feel | Good enough to play with | Quicker to catch a note |
| Keeps | Nothing. Close the tab and it's gone. | What you record, and one tap replays the last 5 seconds |
| Tools | Hit the spoke and the warm-up tune | Tuner, drone, a metronome that finds your tempo, the solfège game, vibrato |
| Share | A screenshot, if you're quick | Camera and spiral in one vertical video, ready for TikTok, Instagram or Snap |
| Big screen | This tab | Mirror it to the TV or the classroom screen |
| You | Gone when you leave | A session card with your rangePremium |
Premium All access
The whole show, every night.
- Everything in Free
- A session card with your range
- Clips up to 5 minutes, no watermark
- Premium themes for the spiral
Prices go up here when both stores list the app.
Everything it does.
See the sound, practice with it, and share it. Here's the whole backline.
Free and Premium tags show where the tier is settled. The rest are in the app, and which pass they sit on is decided before launch.
See it4
| The live spiralFree | Any sound with a pitch, drawn as notes as it happens. Low notes near the middle, high notes toward the rim. |
|---|---|
| Harmonics | The fainter dots stacked above each note. They are why a voice sounds like a voice. |
| Vibrato | Drawn around the note as you sing. |
| Full screen and mirroring | Put the spiral on the TV, a projector or the classroom screen. |
Practice with it6
| Tuner | Chromatic, with instrument presets. |
|---|---|
| Reference pitch | 440, 442 or 432, to match your piano. |
| Drone | A steady note to sing or tune against. |
| Metronome | It can find the tempo you're already at. |
| Solfège gameFree | Do, re, mi. The app calls a note and listens for it. |
| Session cardPremium | Your range, and once you have sung across it, where your voice may flip. |
Share it5
| Camera and spiral | You and the notes in one vertical 9:16 video. |
|---|---|
| Instant replayFree | One tap plays back the last 5 seconds. Sound too, if you turn it on. |
| Short clipsFree | Up to 15 seconds, with a small tonotopia mark in the corner. |
| Long clipsPremium | Up to 5 minutes, no mark. |
| Premium themesPremium | Change the look of the spiral for your feed or your room. |
What it needs, and where your sound goes.
A phone and its built-in mic. No account, and your sound stays on your phone.
Your mic and your privacyTechnical riderApp v1
| Phones | iPhone and Android. The exact models and versions go up here before launch. |
|---|---|
| Mic | The built-in mic is plenty. |
| Account | None. No sign-in. |
| Sound | Drawn on your phone and never uploaded. A video leaves your phone only when you share it. |
| Hears | Anything with a pitch, up to A7 at about 3,500 Hz. Noisy sounds show up as scattered dots. |
For choirs, studios and schools.
Mirror the spiral to the screen at the front of the room, set the reference pitch to match your piano, and run a drone for everyone to tune to. Each section shows up as a dot.
Running a choir, a studio or a school program? Tell us about your room and we'll get back to you.
Tonotopia for choir directors and voice teachersGet on the list.
Opening night is in November. Leave your email and we'll tell you the day it opens.
Admit one
- Show
- Tonotopia, opening night
- Where
- iPhone and Android
- When
- November 2026
- Seat
- Wherever you're standing
Point your phone's camera here to open this page on it.
Keep this stub. You won't need it, but it's a nice stub.