Red Koto Downloads & RevenueRed Koto · App Store
Not in any tracked top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperOliver Grimm
CategoryMusic
Price1,500 JPY
Released
Rating★ 3.7 (3)
Version2.8.1
Age rating4+
First seen by us
23 Oct 2026
23 Oct 2026Full timeline · 2 events in the last 12 months
- 🆕Red Koto first spotted by AppInsiderJapan (found via developer)
- 🆕Red Koto 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
3.7 ★
3 ratings
Measured
Red Koto on the App Store
App details
App ID
387575031
Publisher
Oliver Grimm
On the store since
Aug 2010
16 years on the store
Minimum OS
iOS 13.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN JA
Size
30 MB
Also listed in
Education
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
3.7 ★
3 ratings
Measured
Ratings
3
Measured
About Red Koto
RedKoto is a growing collection of currently 74 tunings by Koto Virtuoso Chieko Mori.
Red Koto can be used for tuning the Instrument by ear, for studying scales, or for playing with the different tunings.
These are the tunings for her compositions and for learning Koto Music at "Koto Studio" in Tokyo.
The Score of each composition is available separately on demand.
Sounds are played both picked with the left hand and plucked with the right hand using ivory picks.
The middle of the screen represents the 13 strings of the Koto, each string plays a plucked sound at the corresponding pitch.
To the right of the string the note is shown, touching each note produces a picked sound.
The order of the tunings can be re-arranged by long-pressing on a tuning in the list.
Except where noted differently, tunings are based on a root note of 442 Hertz.
CHIEKO MORI KOTO STUDIO
https://www.kotostudio.com
ONLINE STORE
https://store.kotostudio.com
Red Koto can be used for tuning the Instrument by ear, for studying scales, or for playing with the different tunings.
These are the tunings for her compositions and for learning Koto Music at "Koto Studio" in Tokyo.
The Score of each composition is available separately on demand.
Sounds are played both picked with the left hand and plucked with the right hand using ivory picks.
The middle of the screen represents the 13 strings of the Koto, each string plays a plucked sound at the corresponding pitch.
To the right of the string the note is shown, touching each note produces a picked sound.
The order of the tunings can be re-arranged by long-pressing on a tuning in the list.
Except where noted differently, tunings are based on a root note of 442 Hertz.
CHIEKO MORI KOTO STUDIO
https://www.kotostudio.com
ONLINE STORE
https://store.kotostudio.com
Latest updates
2.8.1
Added new tunings: Winter Collection3 /part 1 & 2
