If I remember, correctly Concinnity was the second game I ever made available for the public to play. I have come a long way since then.
The game is pretty simple. You rotate lines by tapping on them until they align and there are no loose ends. The game contains 50 levels and an endless mode.
Google Play Store
https://play.google.com/store/apps/details?id=com.LeviMoore.Concinnity