About to delete this app!

Im a premium users and had the same problem that other users: A lot of images lost using this app... and the support ask just for install a calculator app from the same company that not fix anything! Why use a calc instead of this? If this version is bugged why they dont remove from the AppStore? Also a lot of bugs when preview files and user interface need a lot of changes to be better !

Rodrigo Cruz about Secret Photo Vault: Keepsafe, v7.10