47+ iOS apps & games curated and reviewed
Out of 47+ toshihiko arai apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
An ear training app for perfect and relative pitch with a focus on just intonation and learning double-stop notes. Ideal for karaoke enthusiasts, brass band members, and orchestra players. Tune into harmonious sounds with precision and improve your musical skills.
Improve your typing skills on your smartphone with a fun game app that offers various levels, a world ranking, and language learning features. Master character input and compete with others to achieve high scores, then share your progress on social media.
This app is an acoustic experiment tool that displays waveforms like an oscilloscope and features various sound modulation options, including a low-pass filter, tremolo, and vibrato. It's useful for measuring speaker and amplifier performance, sound experimentation, and synthesis, with additional features available through in-app purchases.
This application provides real-time exchange rate information, allowing users to track trends and make informed trades with the help of visual charts. With customizable tabs, users can focus on specific currencies and stay up-to-date on market fluctuations to make the most of their trades.
