Apps by Jumpei Adachi

Piano Chord Memorization 20260718.3.5

FREE
This app helps you memorize piano chords.Version History Translation quality has been improved. 20260718.3.5 Jul 18 You can now select degree notation in the chord flashcard. 20260409.3.4 Apr 9 You can now select sound notation in the chord...

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Plane Notes 5.2.3

FREE
This is an intuitive infinite canvas notebook app.Version History - Fixed an issue where the keyboard would not appear when trying to rename while the Markup toolbar was shown. - Fixed an issue where the Style screen would display incorrectly on...

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Rhythm Learning 3.2

FREE
This is an app for practicing reading rhythms from sheet music. You can practice 10 times for free.Version History The app icon has been updated for iOS 27. 3.2 Sep 10 Stability has been improved. 3.1.1 Jul 20 The usability of the Custom settings...

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Images Comparison 1.9.2

FREE
Compares two images by sliding the width of the images.Version History Improved stability. 1.9.2 Aug 3 Improved stability. 1.9.1 Jan 21 The image is now displayed across the entire screen when it is enlarged. 1.9 Jan 6 Added a photo deletion feature....

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Pinyin Extension 2.8.4

FREE
This app adds pinyin to web pages. All processing happens on your device to protect your privacy.Version History Fixed several dictionary errors. 2.8.4 Jul 17 Fixed layout issues. 2.8.3 Mar 19 Improved stability. 2.8.2 Mar 14 Improved stability....

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Staff Notebooks 2.16.1

FREE
This is a music sheet note app.Version History Fixed an issue where the background flickered after switching to dark mode. 2.16.1 Sep 17 - You can now view a list of page thumbnails. - Fixed an issue where the Style screen was displayed incorrectly...

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Soroban Training 20260613

FREE
This app enables you to play an abacus on the touch screen. You can also just create problems, so you can practice the abacus using your actual abacus.Version History Fixed an issue where touch response was delayed on some OS versions. 20260613 Jun...

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Life-Size Ruler 1.19.1

FREE
This app turns your smartphone into a ruler.Version History Stability has been improved. 1.19.1 Sep 17 - iPhone 18 Pro and iPhone 18 Pro Max have been supported. - Markup feature has been removed. 1.19 Sep 11 You can now open the app from a Control...

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Furigana Extension 3.1

FREE
This is a browser extension that display furigana on webpages. You can try it for free for three days to see how it works. All processing happens on your device, so no information is sent externally.Version History Improved the accuracy of readings...

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