DestroyPix app support
Use two finger tap to turn on/off the User Interface.
After loading in an image, select “Brush” in the menu to paint with a brush. Select “Corrupt” (for example) to use the brush. Then paint on the screen with your finger. Most brushes are pressure sensitive, the Corrupt brush is also direction sensitive. While painting, two fingers can always be used to scale and pan the image. Note that a two-finger tap turns on/off the UI. Press “Fit” to fit the image on the screen. Press “Revert” to start over from the loaded image. Press “Export” to save the image to camera roll.
More info on the app here.
Please contact peder (dot) norrby (at) gmail (dot) com for support