PDF Expert 5 Joins the Tools for Teachers Sale

PDF Expert 5, by Readdle, is celebrating teachers with a 50% off sale as part of the App Store's Tools for Teachers promotion. The app gives you the ability to read, annotate, and edit PDF documents on your iPad or iPhone. PDF Expert 5 also offers the ability to sign documents securely and email them easily.

You can grab a copy of PDF Expert 5 for $4.99 for a limited time.