My girlfriend an I share the bill for grocery shopping and similar things. At the end of the month we sum it all up and divide it by two. My girlfriend does this in an ugly spreadsheet. Of course I can do it better. So I build a desktop app themed with pengiuns (my girlfriend loves them). 😃
There are a lot of Note Apps out there. But none of them works with raw markdown files and a folder structure to categorize and organize your notes. So I build my own one based on Electron and Angular.
A Website where you can create your personal music charts. You can upload mp3's or attach a link. With this webapp it doesn't matter if one song is only present on e.g. spotify, the others only on youtube.