When I was in my highschool I started learning android. My first need was a timetable app, so I made a very simple timetable app. I shared it with my friends and when I noticed people are liking it.... I rebuilt it from scratch and published it on playstore. Now I'm in college and when I see people using it, I feel really proud.

here's the link to mah app:
https://play.google.com/store/apps/...