To reply to your thoughts: 1) Good point. I'll consider removing it for the next release, but from my beta testing, some users felt that an onboarding flow would be nicer. I figured making it short and sweet wouldn't hurt.
2) The images are fetched from the server, because the entire app is very API-driven. You're right though - I could architect it so that the images for the initial page are stored locally and I could use some special category-key to fetch the right image.
3) Yeah, I realized that pretty late when Apple had already approved the app. Fix coming in v1.0.1!
Thanks so much for giving it a try. I do plan on monetizing it later. I replied below on how I plan to do that, but the most important thing for me is to make a quality product that people like using. That's what I'm tracking right now.