画画-神奇画笔 app for iPhone and iPad

General Features:
– Create paintings with dimensions up to 4096x4096
– Background autosave
– Unlimited undo and redo
– Simple and approachable interface

Painting:
– Full screen painting
– Record and replay paintings
– Huge brush sizes up to 512x512 pixels
– 14 parameterized brush shapes
– Adjustable brush settings (spacing, jitter, scatter, etc.)
– Adjustable color opacity
– Invert color and desaturate
– Flip and arbitrarily transform layers
– Adjustable color balance (iPad only)
– Adjustable hue, saturation and brightness (iPad only)

Layers:
– Create up to 10 layers
– Lock and hide layers
– Lock layer transparency
– Adjust layer opacity
– Duplicate, rearrange, and merge layers
– Change blending modes: normal, multiply, screen, exclude

Import and Export:
– Export as image or video
– Place images from your photo album into paintings
– Copy paintings to the pasteboard

Gestures:
– Zoom with two finger pinch
– Zoom in with two finger double tap
– Zoom to fit with two finger double tap
– Toggle interface visibility with a single tap (this can be changed to a two finger tap in the app settings)
– Tap and hold to access eyedropper tool