Free Android Photography App - Sketch Me! Pro (normally $2.99) - Google Play
The paid, ad-free version of the free XnSketch app.
Turn your photos into drawing, cartoons or sketch images in one click to create instant works of art.
★ Different effects (black strokes, white strokes, pastel, pencil sketch, color sketch, cartoon, stamp, halftone, hatching, …)
★ Edge strength, and opacity adjustment
★ Contrast, brightness, saturation adjustment
★ Save or share the result with your friends via Twitter, Facebook, Email, …
★ No registration is required, and there are no watermarks, no limitations.