Harmodus Piano Downloads & RevenueHarmodus Piano - Pure Tuning · App Store
Not in any tracked top chart right now.
Updated 7 Nov 2026 · rankings refresh through the day
DeveloperJumpei Yamaguchi
CategoryMusic
PriceFree
Released
Rating★ 5.0 (4)
Version1.07
Age rating4+
First seen by us
7 Nov 2026
7 Nov 2026Installs (est.)500+ worldwide
Harmodus Piano - Pure Tuning update history & changes
Last change · 5 events since 18 Jul 2026Full timeline ↓Full timeline · 5 events
- 🆕Harmodus Piano - Pure Tuning first spotted by AppInsiderJapan (found via developer)
- 📦Harmodus Piano - Pure Tuning version 1.07Added Auto mode for just intonation. In Major and Minor modes, tap a key to set a fixed tonic, with a persistent key label and tonic markers.
Improved chord detection, sustain, MIDI input, and audio playback stability.
Updated privacy declarations. Free-trial messages now appear only after StoreKit confirms eligibility.… more - 🆕Harmodus Piano - Pure Tuning: its developer released another app: Polytactus Metronome
- 🆕Harmodus Piano - Pure Tuning: its developer released another app: Audire - MIDI Player for Choir
- 🆕Harmodus Piano - Pure Tuning released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
4 ratings
Measured
Harmodus Piano - Pure Tuning on the App Store
App details
App ID
6786988622
Publisher
Jumpei Yamaguchi
On the store since
Jul 2026
Under a year
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
70
AF AM AR HY AZ EU BE BN BG MY KM CA …
Size
158 MB
Also listed in
Education
Harmodus Piano - Pure Tuning downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
5.0 ★
4 ratings
Measured
Ratings
4
Measured
About Harmodus Piano - Pure Tuning
Harmodus Piano is a piano keyboard and metronome app with just intonation.
JUST INTONATION
• Real-time retuning: the app analyzes the chord you hold and applies pure frequency ratios to its root.
• Switch between Equal, Just Major and Just Minor.
• Adjustable reference pitch.
CHORD DETECTION
• 17 chords detected in real time from the notes you play.
• Works with the on-screen keyboard and external MIDI.
18 SOUND SOURCES
• Acoustic and synthesizer timbres — organ, clarinet and more, plus waveforms such as sine and sawtooth.
• Damper pedal with natural resonance.
METRONOME
• 6-track mixer: accent, quarter, eighth, sixteenth, triplet and a custom n-tuplet.
• Odd meters (5, 7, …) add a second accent automatically.
• Tuplets and 2-beat n-tuplets (e.g. half-note triplets).
• A/B alternating patterns, tap tempo, count-in and auto-stop.
• Visible edge-flash and per-track click sounds.
MORE
• Touch and MIDI keyboard (Bluetooth or cable).
• Transpose, sustain / latch.
• 71 languages.
Purchase information:
All features are free with the 25 keys from C3 to C5 (including black keys), with no time limit. A one-time purchase permanently unlocks the full keyboard and keyboard scrolling; an active monthly or annual subscription also unlocks them. Existing one-time purchases and active subscriptions remain valid.
Eligible new users may be offered a 7-day free trial with either the monthly or annual plan. The one-time purchase does not auto-renew.
Terms of Use (Apple Standard EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy:
https://harmoduspiano.musicatechlab.com/privacy/
JUST INTONATION
• Real-time retuning: the app analyzes the chord you hold and applies pure frequency ratios to its root.
• Switch between Equal, Just Major and Just Minor.
• Adjustable reference pitch.
CHORD DETECTION
• 17 chords detected in real time from the notes you play.
• Works with the on-screen keyboard and external MIDI.
18 SOUND SOURCES
• Acoustic and synthesizer timbres — organ, clarinet and more, plus waveforms such as sine and sawtooth.
• Damper pedal with natural resonance.
METRONOME
• 6-track mixer: accent, quarter, eighth, sixteenth, triplet and a custom n-tuplet.
• Odd meters (5, 7, …) add a second accent automatically.
• Tuplets and 2-beat n-tuplets (e.g. half-note triplets).
• A/B alternating patterns, tap tempo, count-in and auto-stop.
• Visible edge-flash and per-track click sounds.
MORE
• Touch and MIDI keyboard (Bluetooth or cable).
• Transpose, sustain / latch.
• 71 languages.
Purchase information:
All features are free with the 25 keys from C3 to C5 (including black keys), with no time limit. A one-time purchase permanently unlocks the full keyboard and keyboard scrolling; an active monthly or annual subscription also unlocks them. Existing one-time purchases and active subscriptions remain valid.
Eligible new users may be offered a 7-day free trial with either the monthly or annual plan. The one-time purchase does not auto-renew.
Terms of Use (Apple Standard EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy:
https://harmoduspiano.musicatechlab.com/privacy/
Latest updates
1.07
Added Auto mode for just intonation. In Major and Minor modes, tap a key to set a fixed tonic, with a persistent key label and tonic markers.
Improved chord detection, sustain, MIDI input, and audio playback stability.
Updated privacy declarations. Free-trial messages now appear only after StoreKit confirms eligibility.
