You can use the different iOS gestures to achieve different things in Photomator: tap to hide, show, or move parts of the Photomator interface, pinch to zoom in or zoom out of your image, drag to control different tools, features, and more.
Using one finger, quickly and firmly touch the screen, then lift your finger. Use this gesture to choose tools, activate features, turn adjustments or adjustment settings on or off.
Other gestures:
Using one finger, quickly tap the screen twice. In Photomator you can use double-tap to reset different controls in color adjustments without affecting other settings of the same adjustment.
You can also double-tap a photo to view it in actual size or zoom it to fit the screen.
Quickly slide one finger side to side on the screen to swipe.
Gently glide your finger over an image to move it around your work area or to pan when zoomed in.
Other gestures:
Gently hold down one finger on an item on the screen to use the gesture. You can touch and hold a photo (or the area around it if you're working with the Repair tool) to see how it looked originally or without the specific edits.
Other gestures:
Place two fingers on the screen and spread them apart to zoom in on a specific part of your photo. Pinch your fingers bringing them together to zoom out.