Playing with ArtRage oils, another app I like to use. I haven’t drawn with it for a while. It’s a free app on android (you can get the ro version with lots of other tools for a price). I like the fact that you can turn up the metallic effects from zero to 100%. There are four brush types. A dry brush and everlasting oils are two of the options. You can also change the size of the brush tools. Maybe it can be a bit fiddly to work with but it’s interesting to use and has a different look to most of the other drawing aps out there.
If you know of other apps, let me know. I want to find other options for drawing.