Contact
Last updated: June 11, 2026
Questions, feature requests, bug reports, corrections to Japanese content — all of it is welcome. Keiko is run by one person, so replies may take a few days, but every message gets read.
When reporting a bug, it helps a lot if you include: the course you were playing, your browser, and what you typed when it happened.
About billing
Payments for Keiko PRO are processed by Lemon Squeezy. For receipts and card questions, your purchase confirmation email from Lemon Squeezy includes a link to manage your order — for everything else, contact us at the address above.