What's a decent iPhone app for getting quick insights on stuff without having to read a whole damn book?

Look, I'm on the job site all day. Ain't got time to sit around reading War and Peace. Deepstash gives you these 'stashes' – basically, key takeaways from articles, books, whatever. It's like CliffsNotes for grown-ups. The interface is pretty straightforward, even with gloves on. Battery life seems okay so far, haven't noticed it draining too bad. The tutorial is useless, but once you figure it out, it's not bad. You can save stuff offline too, which is clutch when you're in a dead zone. It's not perfect, but for getting a quick download of knowledge, it's actually pretty rugged. I've been using it for about a week, and it's already helped me sound smarter during lunch with the project managers. So yeah, Deepstash. Gets the job done.