碁華 (Goka-Go): a free Go app — online play, AI review, and a board I tried to make beautiful

Hi everyone,

I’m a solo developer from Japan (I also run a bot here on OGS, CokiBlueBot). For the past few years I’ve been building a free Go app called 碁華 (Goka-Go), and I’d love honest feedback from this community.

What it does:

  • Online play with flexible settings — time, komi, Japanese & Chinese rules.
  • AI review to study your games: candidate moves, win-rate & territory estimates, and endgame counting.
  • A strong focus on the visual beauty of the board and stones.
  • UI in English, 한국어, 中文, 日本語.

Free download (Windows for now): goka-igo.com

A few screenshots below. I’d be grateful for honest impressions — what works, what’s missing, what feels off. I’ll follow the thread and reply. Thank you!