During college, I took an Android Development course, and the result of my final project was a neat app called Chott (an acronym for “Creative Hobby Occurrence Time Tracker”). The premise behind the app was to track the time spend on creative hobbies/work, a concept partially inspired by Devine Lu Linvega’s Horaire.
I actually use iPhone most of the time, so I don’t use Chott. I’ll consider making something similar in iOS later. Regardless, it’s a usable app (although you cannot delete records made in the app). If you have an Android device and Android Studio, you can go straight to GitHub to get the source, or go to Chott’s page for more info on the project.