Haha, that's very nice of you, but all the credit should go to the original devs at https://github.com/LemmurOrg/lemmur. They've not responded to direct contact but perhaps some donations might attract their interest (they have a donation link on that page).
I've had great fun working my way through the code getting it ready to release, and am enjoying reading other people's perspectives on how the app is working out for them, and that's reward enough for me!