Kanta Oikawa
Software Engineer
Services
Mahjong Dojo
A Japanese Riichi Mahjong learning site, from basics to scoring and strategy (Japanese only)
Riffle
A web app that lets you read PDFs like a book and share them with a link
Feed Stream
An Apple feed reader that brings your RSS/Atom subscriptions together
Break60
A break timer for iPhone and Apple Watch that tells you how much time is left
STRAY-IT
An iPhone walking navigator that shows only direction and distance, for enjoying detours