Software engineer specializing in creating intuitive, easy-to-use client apps, and fast, reliable server softwares on iOS, Mac, Linux, and Windows. My current focus is iOS. Contacts Services X (Twitter) Threads Bluesky Mastodon Facebook Linkedin GitHub Blog (in Japanese) Works LimeChat for Mac LimeChat for Windows (in Japanese) CocoaOniguruma Echofon for Mac (Discontinued) iOS applications LimeCha