LR and Snapseed for color stuff. But for actual photo editing and light drawing I currently use Infinite Painter, as it's the best at handling layers and masks that I've found so far.
I wish I could use Krita, but their Android UI is still too desktop focused, and so doesn't work very well on anything with a smaller screen, they even block the Play Store listing from anything that isn't a Tablet. Instead I sometimes use GIMP or Krita inside a Linux VM using UserLAnd and XServer XSDL, if what I want to do just isn't possible in Infinite Painter, or I can't get to a Desktop.