This app was mentioned in 4 comments, with an average of 1.00 upvote
Gurbani Searcher on Android ... The most complete Gurbani app I have found. Features I really like include bookmarking and tagging Shabads and changing the reading interface colours to whatever I want. Also has longer explanations in Punjabi as one of the translation options.
https://play.google.com/store/apps/details?id=com.search.gurbani.ui
In general search the app stores for Gurbani Kosh (Gurbani Dictionary). On Android I would suggest this app : https://play.google.com/store/apps/details?id=com.search.gurbani.ui
Among other things it has a Shabad Kosh section which is easy to use. Would also recommend installing the Gurbani Keyboard by the same developer to use the app more effectively.
You can check Gurbani Searcher app. https://play.google.com/store/apps/details?id=com.search.gurbani.ui
Gurbani Searcher on Android https://play.google.com/store/apps/details?id=com.search.gurbani.ui
Very very extensive features