With release of Apple iOS 11 version many users are facing many issues. One of such issue is with third party apps used by many iphone users with iOS 10. These apps are now not working with latest iOS 11. The main reason behind this is non-support by iOS11 for 32 bit applications. So many users who were used to of apps like Safe Notes found after upgrade that app "safe note" does not work. Developer of this app needs to update it to work with iOS 11, to make app run in 64 bit environment.
Many users are in serious trouble due to this as they were habitual of saving important password in the Safe Notes app. And with non-working app they cannot access the saved data.
It is not possible to run the app in iOS 11 but you can try below steps to recover the data from DB:
Step 1. Download iPhone BackUP extractor (demo version);