Decent but tricky – Guide for iOS 7 - Tips, Tricks & Secrets for iPhone, iPad & iPod Touch Review

Decent tips. Not a lot of pictures in descriptions. Tricky because tries to get you to pay for emoji that are otherwise free. (Look under International Keyboards in Settings and you'll find them.) iOS 6 tips are mediocre. Mostly covering things that are automatic that you couldn't change anyway. So this app is decent for a beginner, but beware if it tries to sell you something. That thing might normally be free!
Review by Dr. Sundgren on Guide for iOS 7 - Tips, Tricks & Secrets for iPhone, iPad & iPod Touch.