Chord Reading Trainer Downloads & RevenueChord Reading Trainer · App Store
Not in any tracked top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperRuku Kobayashi
CategoryEducation
PriceFree
Released
Rating★ 5.0 (3)
Version1.2.0
Age rating4+
First seen by us
1 Nov 2026
1 Nov 2026Installs (est.)500+ worldwide
Chord Reading Trainer update history & changes
Last change · 4 events since 17 Aug 2026Full timeline ↓🆕First spotted by AppInsider🆕Its developer released another app: Piano Note Reading Drill📦Version 1.2.0
Full timeline · 4 events
- 🆕Chord Reading Trainer first spotted by AppInsiderJapan (found via developer)
- 🆕Chord Reading Trainer: its developer released another app: Piano Note Reading Drill
- 📦Chord Reading Trainer version 1.2.0- Added minor features to make the app more comfortable to use
- Adjusted the design
- Improved app performance
- Fixed minor bugs - 🆕Chord Reading Trainer 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 ★
3 ratings
Measured
New ratings a week
1
App Store, 4-week average
Measured
Chord Reading Trainer on the App Store
App details
App ID
6792265363
Publisher
Ruku Kobayashi
On the store since
Aug 2026
Under a year
Minimum OS
iOS 26.0+
iPhone 11 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
17
NL EN FR DE ID IT JA KO MS PL PT ZH …
Size
15 MB
Also listed in
Music, Games
Chord Reading Trainer 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 ★
3 ratings
Measured
Ratings
3
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
1
4-week average
Lifetime rating
5.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
59/100
faster than 65% of Education apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Chord Reading Trainer
“Want an easy way to deepen your understanding of chords...?”
This app is for you.
【App Features】
- Train chords while having fun like a game!
- Simple controls—just tap the piano keys
- Supports MIDI keyboards
- Focus on selected chord types and train step by step
- Supports a variety of musical keys *
- Customize your training in Custom Mode *
- Supports Dark Mode
* A Premium purchase is required to use this feature.
Please see the following for the terms and other information regarding subscriptions.
- Privacy Policy: https://dualukegg.wixsite.com/my-app-gallery-l
- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
This app is for you.
【App Features】
- Train chords while having fun like a game!
- Simple controls—just tap the piano keys
- Supports MIDI keyboards
- Focus on selected chord types and train step by step
- Supports a variety of musical keys *
- Customize your training in Custom Mode *
- Supports Dark Mode
* A Premium purchase is required to use this feature.
Please see the following for the terms and other information regarding subscriptions.
- Privacy Policy: https://dualukegg.wixsite.com/my-app-gallery-l
- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Latest updates
1.2.0
- Added minor features to make the app more comfortable to use
- Adjusted the design
- Improved app performance
- Fixed minor bugs
