1. Having a paper/canvas texture interacting in real-time with the drawing tools will give your artwork a satisfying, gritty look.
2. Tip: Use the Smear tool on a photo or drawing to achieve immensely cool flame art (seriously, try it!).
3. Drawing tools include Glow Pen, Hot Pen, Light Spheres, and more.
4. Create a drawing from scratch, or add effects to your photos.
5. The engine is based on Metal, with 128-bit color and floating-point arithmetic.
6. The app was developed entirely using Swift (earlier versions used C++).
7. You can remove or change the default-generated texture to something else.
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