KOOMZE keyboard software
sharkfin is a free, open-source replacement for the KOOMZE app: remap keys, set the RGB, paint per-key colour and record macros on 3 KOOMZE boards, 3 of which accept changes. Use it in a Chromium browser with nothing to install, or as an app on Windows, macOS and Linux. It runs entirely on your own machine, with no account.
Does sharkfin support my KOOMZE board?
The table lists every KOOMZE model sharkfin knows, 3 in all. If yours is missing, plug it in anyway: these boards report their own device id, and sharkfin identifies anything built on ROYUAN hardware from that reply.
| Board | Writable | Layout |
|---|---|---|
| KOOMZE H71 | yes | after a one-time check |
| KOOMZE H75 | yes | after a one-time check |
| KOOMZE H98 | yes | after a one-time check |
"Writable" means sharkfin will change settings on it. Read-only boards are ones whose command set is not established yet; sharkfin identifies them and reads from them, but refuses to write, because the two protocol families in this hardware share opcodes that mean different things. "After a one-time check" means the picture exists but is confirmed against your own board first: two boards can share one picture and still disagree about which internal slot a key lives in, so sharkfin trusts the keyboard over its own files.