Anyone else use HeavyPaint?
(Feel free to share here!)
I've been messing around with the oil brush recently on my phone using my fingers.
Heavypaint keeps things simple. I really like it on my phone. The free Android version is excellent, lets you keep 10 or so images at a time with no ads. And if you like it the full version is super afforadble. I espectially love the colour jitter funtion, which changes the colour a bit every stroke you do (you can see this very well on the first picture).