These were drawn in MyPaint a free paint application for Linux, on a Lenovo X230 tablet running Ubuntu. The whole experience was pretty fun. I picked up the machine from UPS on my way to work this morning, and went to the figure drawing session on my way home. I hadn’t installed any paint applications yet, so I downloaded MyPaint over wi-fi at the studio and started drawing. I spent about half of the shorter poses figuring out a system to change brushes & save my work without leaving tablet mode.
In the end, I’m pretty happy with it as a drawing tool, and this is without much customization or any paid software.