Annoying backup system. I've had installed this app and logged in with Google account once. I also tried some of the app's features, but I uninstalled again because of reasons. After some times, I decided to install it again. So I made my tasks and the others without logging in first (because I forgot). Then, when I logged in with my Google account after that, it replace my current data with the older one without warning. Now all my newly created, more complete data is all gone.