I have an in-app purchase that unlock some pro features of my app (a non consumable inapp with restore mechanism). I need to store the in-app identifier in the device to check if a user has already buy the in-app. I want this value availabe quickly when i start the app, i don't wanna wait the return of a webrequest each time the app starts. I have some alternatives to reach this result:
- NsUserDefaults (not safe)
- ios Keychain (safe)
- Alternative git project that "secure" the nsuserDefaults (safe, but seems a bit old project...)
Anyway for some reasons i should prefer to store the identifier in the sqlite db of the app, my question is: A user with a non-jailbreak device can change the content of the db with software like IExplorer ? Something like : Open IExplorer->find db of my app-> change the value for the column "already buyed" -> launch the app and get the pro-features for free...
