Tonagi: Tuner Practice Studio
A tuner that hears you practice.
Tuner, metronome and note sequences in one app for iPhone and iPad. It plays the reference beside you and shows how every note settles.
Tonagi
C
523.3 Hz · Octave 5
+0¢
Coming soon to the App Store
€2.99/month · €14.99/year · €34.99 lifetime — 7‑day free Premium trial
Train your ear
Hear yourself improve
The concept
Not just another tuner.
A tuner tells you if the note is sharp or flat in the moment. Tonagi measures, tracks and shows how your intonation evolves over time — the difference between a mirror and a partner who remembers. For every musician — instruments and voice.
Listen
The microphone analyses what you play or sing in real time, note by note.
Train
Note sequences, routines guided phase by phase and a practice metronome give your practice structure.
Improve
Every recording gets a score, a note-by-note profile and automatic observations.
The proof
Four takes of a G major scale.
Every take is scored from 0 to 100 — how close each note settles to its target: full credit inside your tolerance, partial credit up to twice it. You choose it: Wide ±15, Medium ±10, Fine ±5 or Minimal ±2 cents. Watch the number climb between takes, and you know the practice worked.
Working on it
Take 1
Developing
Take 2
Developing
Take 3
Very good
Take 4
The app
Five views. One practice.
01 / 05
Tuner
Real-time pitch, two ways to see it.
- Tone thread — the trail of every note you hold; green when it settles.
- Tone orbit — twelve notes around a ring, one octave per circle; a mark for every note you touched.
- Slate blue when flat, amber to coral when sharp. Tap a note to hear it.
02 / 05
Metronome
A pulse you can read from across the room.
- Flash on every beat, stronger on the downbeat.
- Compound and mixed meters, rhythmic figures.
- Inner pulse, Acceleration, Polyrhythm — the practice tools.
03 / 05
Sequences
Notes and chords played beside you, one step at a time.
- Step with a Bluetooth pedal, or let Guided and Accompaniment pacing move for you.
- Loop, mirror, mark the passage you are working on.
- Stamp any step with its own temperament — and, in Accompaniment, its own rhythm, down to a fraction of a beat.
04 / 05
Routines
Practice in phases, built from what the app already has.
- Tuner, metronome, tone generator, a sequence or a free moment.
- Each phase ends after minutes, passes or bars — or when you move on. Start from any phase.
- At the end, how each phase went; next time, what you did last time.
05 / 05
Progress
Every recording scored 0–100.
- Note-by-note analysis, with the orbit of the whole take.
- Projects group takes of the same passage; Development draws the line.
- PDF reports, iCloud sync.
Under the surface
Deep where it matters.
Temperaments, reference pitch, transposition, vibrato — the side of intonation that fascinates musicians.
Why temperaments matter
"In tune" is not one fixed point. A melody wants its leading tones leaning high; a chord only locks when its thirds are pure — noticeably away from where a piano puts them; and playing with a piano means meeting it in equal temperament. Trained ears move between these targets all the time. The temperament you choose tells Tonagi which one to hold you to.
A C major chord — switch the tuning while it plays.
Temperaments
15 built in — plus your own.
Pitch
A from 400 to 470 Hz, and transposition.
Two readings
Tone thread and tone orbit — with vibrato modes.
Listening
Ambient calibration and a sub-bass mode.
Tone generator
Polyphonic, 7 timbres — the tuner keeps listening.
Import & export
Analyze .m4a, .mp3, .wav or .aiff; share PDF reports.
iCloud sync
Your practice data, in your own iCloud.
15 languages
Latin, English or German note names.
The name
Why Tonagi?
Tonagi
Tone — The reference you hear.
Tonari 隣 — The partner always by your side.
Nagi 凪 — The sea falls still.
Tonagi is the partner playing the tone by your side, until the note settles.
Tonagi brings three ideas together. Tone is the pitch, the reference you hear. Tonari (Japanese, “by your side”) is the partner who’s always there — like a friend playing alongside you as you study. And Nagi (Japanese, 凪) is the moment the sea falls perfectly still.
Community library
Built once, shared with everyone.
People build valuable things inside the app. The library is where they share them — download and import with one tap. No messages, no recordings. Just content.
- Choir warm-up — unison, fifth, third Voice · 3 phases · Warm-ups · by Starter collection
- Bars 33-80 • Harmony All instruments · 108 steps · Johannes Brahms, Symphony No. 4 in E minor · bars 33–80 · with accompaniment · by BUganda Premium to open
- Bassoon · G melodic minor scale (ascending) Bassoon · 8 steps · Pythagorean · Scales · by Starter collection
Privacy
Private by design.
Your sound is analysed in real time, on your device. Your audio stays on your device — and, with backup on, in your own personal iCloud. The app sends us no audio and no practice data — no account, no analytics, no ads. The optional community library on this site is the one exception: a basic account (an email and a display name), used solely to publish and like.
Read the full privacy policyPricing
Free to start. Premium when you want more.
The tuner, the metronome, three sequences and three routines are free, forever. Premium opens the rest — listed above — by subscription or a single purchase.
Monthly
€2.99
per month
7‑day free trial, then renews monthly.
Yearly
€14.99
per year
7‑day free trial, then renews yearly — about €1.25 a month.
Lifetime
€34.99
once
One purchase. No renewal, ever.
- 7‑day free trial on both subscriptions — nothing is charged if you cancel before it ends.
- Cancel anytime in iOS Settings ▸ your name ▸ Subscriptions.
- Restore purchases from the app’s Settings (or the paywall) on any device signed in with your Apple Account.
- Euro prices; the App Store shows the price for your country.
Coming this autumn.
Tonagi is in beta with musicians now and arrives on the App Store in autumn 2026. Follow along on Instagram — that’s where the launch will be announced first.
Coming soon to the App Store