I am building an app called Stellar Focus, which is a spaced-themed study timer. In this, all you do is set a timer, and when you stop, the app will generate a galaxy in 3D space (working on this part). The longer you study, the further you travel, and the bigger the galaxy you will have. Overtime, with more and more studying, you can collect more and more galaxies and build your own "universe." So, as you study more, you can set on the timer and go through the endless universe, discovering galaxies and different planets and facts about space. As of now, I'm experimenting with web app!