I’ve made an android app for splitting expenses. I was so frustrated when I was in charge of the excel sheet with my friends geoup New Year"s trip expenses, that I started working on it and I pushed it in production in the end of July. Which is especially great because I have a sizeable graveyard of things that I was burning for and then completely abandoned.
It’s called WEREVEN, it’s free, has no ads (maybe I will monetize it in the future, but I don’t want to annoy 20 people who use it), and I don’t collect your personal data.