Paywalled article. Here’s the link to the app: play.google.com/store/apps/details?id=ch.pocketpc…

Edit: it’s licensed under a license I never heard of. I’m curious, I don’t understand why it was needed.

“Why draft new licenses? Until now, there has been no standardization of this kind of source code license, even though it has become increasingly common. This has resulted in confusing and overlapping licenses, which need to be analyzed one at a time. Lack of standardization has used up the time and resources of many in the software industry, as well as their lawyers. The objective of the PolyForm Project is standardization and reduction of costs for developers and users.”

Seems like that exact XKCD about standards.