This is forked watchfaceEditor with experimnental and really quick addition of Amazfit GTS.
Also added quick electron build for convenience.
You can grab built version from release
If you want to build electron app yourself, just clone this repo and
npm run build-electron
I really speedran this thing so expect bugs and errors.
Ps. Edit tools in single package are on the way.
Watchface editor for Amazfit Bip, Amazfit Cor and Mi Band 4
First you should disassemble watchface.bin file and then upload all images and .json file to this app
There is a full instruction in app