Difela Tsa Sione by ZolApps is a free Android app that offers a digital representation of the classic Sotho hymn-book. With this app, users can search for hymns using either the title of the song or any word that they remember from the hymn. This makes it easy to find the right hymn, even if you can't remember all the lyrics.

The app's search algorithm is fast and accurate, and it is regularly being improved to provide even better results. Users can also save their favorite hymns for easy access in a playlist format. The interface is elegant and simple, making it easy to navigate and use the app.