Masahiro Tomonaga (masahiro-tomonaga)

Tokyo, Japan

Google Maps Platform Hackathon

Online

Build with the power of Google Maps Platform.

$24,000 in prizes
Winners announced
2588 participants

Chirp Developer Challenge

Online

Build an app using Twitter’s API v2 to unlock new experiences for people on Twitter, and inspire other developers.

$520,600 in prizes
Winners announced
1604 participants