An intuitive notebook app featuring an infinite canvas for note-taking and idea organization. It allows for seamless creation and management of notes without page limitations.

144+ iOS apps & games curated and reviewed
The best jumpei adachi apps on iPhone average 4.4★ across 144+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

An intuitive notebook app featuring an infinite canvas for note-taking and idea organization. It allows for seamless creation and management of notes without page limitations.




Learn and practice abacus skills directly on your touchscreen. Generate custom problems to hone your abacus techniques, even with a physical abacus.


Practice reading musical rhythms from sheet music. This application provides a tool for musicians to hone their sight-reading skills with various rhythmic patterns.


This browser extension displays furigana, Japanese phonetic guides, directly on webpages. It offers a free trial period for users to experience its functionality. All processing is done locally on your device for enhanced privacy.


Easily compare two images side-by-side. This app allows you to slide between images to highlight differences or similarities. Perfect for visual analysis and detailed review.


Transform your smartphone into a precise measuring tool. This utility app allows you to measure lengths and distances directly on your device's screen. Ideal for quick estimations and practical applications.


This application is designed to assist users in memorizing piano chords. It provides a focused learning experience for musicians looking to improve their chord recall.


This application provides a digital space for composing and notating music. It allows users to write down musical ideas and create scores directly on their devices. Ideal for musicians and composers, it offers a convenient way to manage musical compositions.


This browser extension displays pinyin directly on webpages. It processes all data locally on your device, ensuring your privacy. Enjoy a more accessible reading experience for Chinese content.


Navigate treacherous waters by jumping and diving to avoid falling bombs. Test your reflexes and see how far you can swim in this challenging arcade-style game.


Control multiple characters simultaneously to make them jump over obstacles. Challenge yourself to see how long you can survive the increasingly difficult levels. Cooperate with friends or use all your fingers for maximum control.


Test your reflexes and strategic thinking by tapping to jump between platforms. Navigate carefully to avoid fake paths and aim for your highest score. See how far you can progress in this challenging arcade game.


Navigate a car across a series of platforms by timing your jumps precisely. Avoid collisions with other vehicles as you ascend. Test your reflexes and see how high you can climb.


Tap to jump up stairs and ascend as far as possible. Avoid falling through gaps or hitting stairs. Collect gems to unlock new cosmetic items for your character.


Guide a character upwards on a graph paper world using tilt controls. Collect power-ups like jet packs and avoid obstacles such as black holes and monsters. Compete with friends and players worldwide on global leaderboards.


Swing from a rope and launch yourself towards the goal in this addictive physics-based game. Master precise timing to avoid obstacles and clear increasingly challenging levels. Collect crowns and trophies for extra rewards and enjoy daily new stages.


Guide a character through challenging levels in this fast-paced platformer. Test your reflexes and timing with simple one-tap controls. Enjoy vibrant worlds, compete with friends, and play offline.


Guide a character upwards on a graph paper world using tilt controls. Collect power-ups like jet packs and avoid obstacles such as black holes and monsters. Compete with friends and other players on global leaderboards.


Guide a character upwards by tapping to jump onto moving platforms. Avoid falling off the screen to keep playing. The game ends if your character falls.


Tap left or right to jump between platforms in this addictive endless hopper. Collect cute costumes, decorate your house, and discover adorable Miimo characters. It's easy to learn but challenging to master, offering a fun experience for the whole family.