PicTapGo's Crop tool allows you to recompose the image, whether to fix technical issues, or for artistic reasons. PicTapGo's crop tool works a little differently from most mobile photo editors. Instead of dragging the image's corners, you use gestures to move the image within the frame. The shape of the image's frame is managed by choosing the aspect ratio of the resulting image.
Crop Tool Gestures
Pinch the image to shrink or enlarge it.
Drag with one finger to move the image within the frame.
Swipe the aspect ratio carousel or tap a preset to change the aspect ratio of the image. Tapping the aspect ratio button again will bring up a slider that allows you to set an arbitrary aspect ratio. Each tap of the aspect ratio button will toggle between these two modes.
The straighten control allows you to rotate the image left or right, for instance to correct a crooked horizon.
Press to flip the image horizontally.
Press to rotate the image by 90 degrees.