See the red circled part on the screenshot below. I have difficulty to adjust the size slider setting precisely in the android app of SketchBook, e.g. I want to set the pressure size to be 11.6, it's very difficult to do this precisely by finger.

Suggestion: add (+) and (-) button at the both ends of slider so user can press the (+)/(-) button to increase/decrease the slider setting by 0.1.