How can I back up/restore my data?
You can back up your data manually. This process will create a file, AllinFun.json, under internal storage/Download. You should copy this file and paste to the same place in your new device. Then, you should go to the setting in AllinFun and click on restore option. In addition to the manual backup, your data will be backed up to your Google Drive automatically. The place that AllinFun can use in your Google Drive is limited. Thus, if the size of your AllinFun data exceeds this limited Drive size, some of your data will not be backed up. Even though it is very hard to exceed this limited size, you can be sure that any of your data will not be lost by using manual backup.
You can synchronize your AllinFun and TRAKT data. This process will not affect your list in TRAKT, it will create three custom lists, AllinFun-Movies, AllinFun-TVSeries, AllinFun-People, and keep these lists synchronized with the AllinFun lists. The changes you make in AllinFun appear in your TRAKT account instantly if your TRAKT account is connected whereas the changes you make in TRAKT appear in AllinFun in at most 24 hours (daily). You can also use TRAKT manual synchronization to get the changes from TRAKT immediately.