Topic 1: How do you organize your design iterations in sketch specifically on a fast moving mobile app? Do you use pages or just keep duplicating artboards within a single page? I used to use Kerem Suer's approach of filename, platform, direction & iteration but this method does not seem to hold up since moving from PS to Sketch.
Topic 5: Since I started to write iOS apps I have been mostly ignoring learning to write unit tests in my code. Mainly because I feel this could be a chore but more people are telling me writing tests saves time in the long run. Is this something you do when writing applications? If so, what is your philosophy (e.g. Test Driven Development) and what tools do you use for testing?