- Publish Date
- Monday, 7 September 2015, 4:38PM
When you first look at it, Ultimate Calculator just seems like a generic calculator app, a bit like the one that's probably already on your phone.
But it's so much more than that.
It's ACTUALLY a very clever hidden photo gallery where you can hide things you don't want anyone who may snoop through your phone to see.
The app first became public knowledge when Pamela Casey, a district attorney in Alabama in the US, posted a video warning parents about the “Calculator%” app for iPhone.