Free · open source · community-built

Learn to sing, together.

MercuryPitch turns pitch practice into a game you play with everyone else. Hit your notes, climb the leaderboard, take on weekly challenges — and never pay a cent for the part that lives on your device.

Join the community See how you'll learn
Aria
Blaze
Flux
Luna
Glint
Echo
±1¢
Pitch accuracy
11
Ways to play
$0
To start
6
Voice characters
This is what singing looks like

Watch your pitch land, in real time.

Sing a melody and your voice draws a living line across the staff. Each note glows green when you nail it, amber when you're close, red when you drift. Switch to Piano or Karaoke to see those modes, too.

LIVE
Mic On ▶ Play ⤢ Focus Once Repeat C Major ♩ 60
B3 · 247 Hz CDF FGAB
Accuracy
Perfect0
Excellent0
Good3
Okay4
Off1

Voice
Aria
Aria
piano
● LIVEPerfect 0 · Good 3 · Okay 4 · Off 1Score 53%
Your path

Progress you can hear.

No lectures. You sing, you score, you level up — and the app quietly steers you toward the notes you keep missing.

LEVEL 01

Match a note

Pick a key, sing it, watch the bar turn green. That's the whole loop — and it's instantly satisfying.

LEVEL 02

Run a scale

Step through major and minor scales with a moving target and a count-in metronome.

LEVEL 03 · NOW

Beat your weak spots

Focus Mode reads your history and builds drills around the intervals you struggle with.

LEVEL 04

Take on the world

Enter weekly challenges, climb the leaderboard, and jam live with other singers.

The community

You're never practicing alone.

Because the app is free, the community is the engine. Share melodies, race the leaderboard, and take challenges that refresh every week.

Weekly leaderboard

Live
01lunar_lark
14-day streak
98.4%
02aria_sings
9-day streak
96.1%
03perfect5th
21-day streak
95.7%
04flux_capacitor
3-day streak
93.0%
05echo_chamber
6-day streak
91.8%

Perfect octave

Hold a clean octave jump within ±10¢.

Try

Speed scales

Run a two-octave scale at 120 BPM, clean.

Try

Karaoke duel

Out-sing a friend on a separated track.

Try

Jam relay

Trade four-bar phrases live, peer to peer.

Try
Why it's free

A community can't grow behind a paywall.

So everything that runs on your device — practice, composing, analysis, jamming, every challenge — is free. The only thing we charge for is server-side stem separation, because splitting vocals out of a track burns real GPU time on our machines. We price it at cost. That's the deal.

Free on-device Open source · AGPL-3.0 Private by default Compute at cost
Questions

Before you join.

Is it really free, or free-with-a-catch?
Genuinely free. Everything client-side — practice, composing, analysis, jam, community, challenges — costs nothing. The only paid feature is server-side stem separation, priced purely to cover GPU compute.
Do I need an account to join the community?
You can practice instantly with no account. A profile lets you appear on the leaderboard, save streaks, and enter challenges.
What are the six characters?
Aria, Blaze, Flux, Luna, Glint and Echo — playback voices, each mapped to its own instrument (piano, synth, organ, strings, sine and a mellow piano). Pick the timbre you like to practice against.
Can I sing with friends?
Yes — the Jam mode connects you peer-to-peer over WebRTC for low-latency, real-time sessions.
Is my voice private?
Pitch detection runs entirely in your browser; your mic audio never leaves your device. Only files you choose to send for stem separation are processed on our servers.
Join in · it's free

Add your voice to the chorus.

Start singing now, or drop your email for weekly challenges and new features. No spam, no paywall surprises.