-Amazing live paint mixing and realistic brushes
+Free version allows exporting to various formats including png
+Many brushes and brush options
+Good layer support
+No disturbing ads even in free version
-No obvious way of changing the brightness of brush color (it’s easy to change the hue and saturation though). EDIT: you can change it from the paint bucket symbol at the top (confusing because a paint bucket symbol usually means a fill tool)
-Limited size options for canvas
-No obvious way of transforming (rotating scaling etc) what you have drawn. You can accomplish it via copying and pasting a selection to another layer though.
-No numeric way of setting color values (makes copy pasting colors from other apps difficult.
+Good brush selection
+Fast and no lag
+Easy to transform parts of image
+Clear, solid user interface
+Seems very stable (zero crashes so far)
+Great layer system
+Supports pressure sensitivity
+Paid features are now available to all users.
-Online community discontinued so the development has likely halted