I was approached by Lachina (a former employer) in 2016 to develop the Android version of Garner’s Modern English Usage, a sort of dictionary for word usage. It is a fully featured digital version of the print resource, with the addition of quizzes and a way to bookmark favorite entries.
The iOS app had been developed separately, so this version was built as a native Android application in Java (this was before Kotlin was available) utilizing an SQLite database.