The "instructions" at the start of the app are a bit baffling. I spent a good few minutes looking at a screen that told me to tap and drag and a weird orange circle that keys popping up above the capture button. In fact the entire selection with the ISO and shutter speed are a little on the janky side, I'm having a good deal of trouble seeing what I'm actually selecting. It's more completely random than anything with the shutter speed as my thumb obscures the entire view. Weird control usability aside it seems fairly functional, I've wanted something like this for a while.
Do you have a privacy policy somewhere with details about the information you collect from the application? I was unable to find any on your website.