Apps by Jumpei Adachi
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Rhythm Learning
Music
4.67
(1,869 worldwide)
Free
IAP
Released Jun 2020
· updated Jul 2026
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Soroban Training
Education
4.62
(1,794 worldwide)
Free
IAP
Released Jun 2020
· updated Jun 2026
-
Plane Notes
Productivity
4.48
(892 worldwide)
Free
IAP
Released May 2023
· updated Jul 2026
-
Piano Chord Memorization
Music
4.68
(208 worldwide)
Free
IAP
Released Oct 2021
· updated Jul 2026
-
Staff Notebooks
Utilities
4.33
(204 worldwide)
Free
IAP
Released Oct 2023
· updated Jul 2026
-
Furigana Extension
Reference
4.66
(56 worldwide)
Free
IAP
Released Jan 2022
· updated Jul 2026
-
Images Comparison
Photo & Video
4.52
(46 worldwide)
Free
IAP
Released Aug 2022
· updated Aug 2026
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Life-Size Ruler
Utilities
4.48
(27 worldwide)
Free
IAP
Released Jun 2024
· updated Jul 2026
-
Pinyin Extension
Reference
4.36
(11 worldwide)
Free
IAP
Released Dec 2021
· updated Jul 2026