Sync App Data (SQLite, Cloud solution)

Hi,

I want to synchonize the app (SQLite DB) data, if the user want that.
There I have a problem, how and where. Bluetooth or something like that isn´t the optimal way for me, I want to do it by a cloud.
I read a solution with dropbox but each user need a account there.
The best solution I think is to do this with the Google account, which is connected with the smartphone. But I don´t find something for that. Is it possible at all? If yes, I would be happy if someone can give...

Sync App Data (SQLite, Cloud solution)

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