Coming soon · iOS & Android

Finally see if
you're singing
in tune.

The first practice mirror for singers, violinists, and any musician playing pitch-sensitive instruments. Record any melody. Sing or play it back. Watch your interpretation overlap with the original — note by note, in real time.

Original melody
Your interpretation
Scroll to see it work
The frustration

You can hear something is off.
You just can't see what.

For singers, violinists, and anyone playing a fretless instrument, pitch is invisible. You hear the gap between how it should sound and how it does — but pinpointing the exact note, the exact moment, the exact amount? That takes years of ear training. Or a teacher who happens to be in the room. Or a tool that finally shows you.

How it looks

Two traces of light.
One simple truth.

When you record a melody, Sinestesia draws it as a flowing trace of light. When you sing or play it back, your interpretation appears as a second trace — right next to the original.

No notes to read. No staff to interpret. No music theory required. Just sound, made visible.

00:06   Ready Stop Practice
How it works

Practice anything.
In four steps.

No catalog of exercises. No subscription to access "your" songs. Sinestesia works with whatever melody you bring it.

Step 01

Record any melody

Hum it, play it from a speaker, sing it yourself. Any tradition, any tuning, any instrument.

Step 02

Watch it visualize

Sinestesia maps the pitch and dynamics as a glowing trace. No staff. No note names.

Step 03

Play your version

Sing or play. Your trace appears in real time, right alongside the original.

Step 04

See the gap. Close it.

Adjust. Try again. Your ear catches up to your eye faster than you'd believe.

Built for

Made for the instruments where pitch is never fixed.

Frets and keys give you the note. Everything else asks your ear to find it. Sinestesia gives you something every fretless musician has wanted: a mirror.

Voice
The original pitch-sensitive instrument
Violin
Every millimeter matters
Viola & Cello
Fretless by nature
Fretless bass
Expression through intonation
Sarangi
The soul of Indian classical
Erhu
Two strings, infinite pitch
Theremin
Touch nothing, shape everything
Oud
Fretless, microtonal, timeless
Any tradition
If you can play it, we can show it
Why we built it

One notation system was never going to work for all the world's music.

The staff. The twelve notes. The sharps and flats. For a thousand years, one tradition defined what music looks like — and quietly decided that everything outside it was a mistake.

Indian ragas bend through microtones the western scale doesn't name. Chinese pentatonic music follows different harmonic logic. The human voice finds pitches no fret can locate. These aren't errors. They're entire worlds of music.

Sinestesia doesn't name your notes. It shows you the shape of your sound — pitch and loudness over time — the physical features that every melody on earth shares.

"The director played the same melody over and over. No one could say in words what was different. Now, you can see it."
— The moment Sinestesia was bornFrom the founders' string band days in college
Questions

Things people ask before joining.

Quick answers to the most common questions. Reach out if yours isn't here.

Is it free? +

Sinestesia is in development and the early access version will be free for waitlist members. Pricing for the public release hasn't been finalized — but everyone who joins the waitlist will get extended free access when we launch.

Will it work for my instrument? +

Sinestesia works with any single-pitch instrument — meaning anything that produces one note at a time. Voice, violin, viola, cello, fretless bass, wind instruments, sarangi, erhu, oud, theremin, and many more. Polyphonic instruments (piano, guitar chords) are not the primary focus, though they may work for melody lines.

Do I need to know music theory? +

No. That's the point. Sinestesia visualizes the physical features of sound — pitch and loudness — without using note names, sharps and flats, or staff lines. If you can hear a melody, you can use it.

Does it record my voice? Is it private? +

Audio analysis happens on your device. Recordings stay on your phone unless you choose to save or share them. We never sell, listen to, or train models on your audio.

Will it work for non-western music? +

Yes — and this is one of the things that makes Sinestesia different. Because we don't snap pitches to the western 12-note scale, microtonal music, ragas, maqams, and any tradition outside the western canon work natively. Your microtones are not "errors." They're music.

When will it launch? +

The prototype is working. We're in user testing now and aim to open early access in the coming months. Waitlist members are the first to know — and the first to try it.

Coming soon

Waitlist opening very soon.

We're putting the finishing touches on Sinestesia. The waitlist opens soon — check back here to be among the first to join.

Free early access
No spam, ever
Help shape the app

iOS & Android · Built in Colombia · Made for the world

Waitlist opens soon. Be among the first to join.