Talk:FAQ/@comment-96.230.236.183-20151025101614/@comment-26005122-20151025225442

As long as you were playing on a LINE account previously, it's perfectly safe to delete the app and reinstall it without losing any Tsums or game information. Just be sure to tap the smaller button on the bottom that says "LINE Login" instead of the larger button that says "Play." I've deleted and reinstalled the Tsum Tsum app many times to double check nothing gets deleted, and to show people that you do keep all your previous game information. It might loop the LINE Login screen a couple of times because you have to confirm and allow the LINE app to interact with the Tsum Tsum app.

It's kindof like the other games that allow you to log into Facebook that will save your progess, like Candy Crush. If you're logged into Facebook in the game, and you delete Candy Crush and reinstall it, all your saved data will still be there. It's just that Tsum Tsum is done through LINE instead.