Codenza

Codenza began as my friend Pratik’s final year project. I’d had the idea for a long time: a single place for programming basics, algorithms, and handy references. When the chance came, I joined him. Together we turned it into the app we wished we’d had in college: multiple languages, data structures, Big O and sorting, plus free programming books and cheat sheets.

The free version of Codenza reached about 490,000 total downloads before Google removed it from the Play Store. We had stopped shipping the regular updates Google expects, and they delisted the free listing for that reason.

All programs in the app are still free to download, edit, and redistribute if you have a copy. Codenza Pro ($4.99) is still on the Play Store. We never got the free app relisted after we fell behind on updates; the paid app stayed up. Google takes a commission on paid sales, so draw your own conclusions about why one listing went and the other did not.