Update app without removing data

Hi, i have made a game and some of my friends are playing it. Now i want to update the game, but without deleting all the data (I use tinyDB, but i would use something else if needed) any sugesstions?

TInyDB is a persistent data store for the app, i.e. your data still will be there after an update
just increment verison name and version code in the Screen1 properties...


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