1. As a designer I don't have a specific focus, I work on web apps as much as iOS apps. Haven't worked on an Android app yet, though.

2. I haven't had anybody pirate by book as fas as I know. Maybe it's because of the low price point? That being said I wouldn't really care even if it did happen. I do not believe it would take away from sales much, probably just expose my book to people who would never have bought it anyway.

So in a way, piracy is a form of market segmentation that enables you to reach even the cheapest customers!