Does reading on the iPad or Kindle count toward my kids' daily reading minutes, or would it be considered screen time?
So long as they're really reading, then it's legit. The best way to ensure that real reading is happening, stick to real books or basic ereaders with paper-like screens that don't download apps. According to a 2012 study conducted by the Joan Ganz Cooney Center, print and basic ebooks are better for "literacy-building experiences" than feature-rich, multimedia ebooks. If you want to make sure your kids are comprehending what they're reading, read with them or ask them to read to you.