
Roll Player Piano
Hand-cranked player piano app
0 ratings
Free
In-App Purchases
About
Features
-Rotating finger gestures on the screen to play music.
-The music can be played according to the conducting motion of the index finger captured by the front camera*.
-The music can be played accordance to the movement of the rotating circle captured by the rear camera*.
-The tempo of the performance can be controlled by the speed of rotation.
-The volume of the performance can be controlled by the size of the rotation radius.
-You can also play at the volume according to the score.
-You can record your performance.
-57 different sound sources can be switched.
-The equalizer allows independent adjustment of the volume of the low, mid, and high frequencies.
-MIDI files can be imported**.
-You can enjoy automatic performance.
-You can bring multiple iPhones to enjoy ensemble playing.
-You can practice ensembles with just one iPhone.
-You can play hand-cranked music by reading roll sheet socre with the camera*.
-You can play hand-cranked music by reading the rotating circle with the camera*.
-You can print roll music score for hand-cranked music box (40mm/70mm width) as PDF file*.
-You can print music score for disc-type hand-cranked music boxes as a PDF file*.
* In-app purchase ($0.99) will add more functions.
** In-app purchase ($3.99) will add more functions.
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What's New in Roll Player Piano
3.0.10
April 22, 2026
- We have revised the margin layout for printed “Turntable(90mm)” sheet score to make it easier to adjust camera settings. - We have implemented a level indicator feature to display the device's tilt, making it easier to position the device during hand-crank performance mode.
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In-App Purchases
$3.99
MIDI file import
Add a function to import MIDI files.

