Hey @rndmh3ro,
Nice! I was looking for a good time-tracking app for my individual art practice and found Kimai. Unfortunately the Yunohost implementation of Kimai is an old version, and is currently looking for an adopter. Kimai 2 v0.6.1 Time-Tracking app
I am quite curious about Invoice Ninja as well. Do you think time tracking works well in it?
I think I will try out your app once I have my Yunohost installation up and running again.
Good luck testing!