Like the app Leonard and Sheldon created on CBS's Big Bang Theory, life is imitating art. Photomath is every student's dream and every teacher's nightmare. It is a camera based calculator. Take a picture of your equation of math problem...and Photmath gives you the answer! Not only does it solve the problem in real-time...it also helps the user by walking you through the problem, step-by-step if necessary.
Free in iTunes and the Windows Store...the app's website says an Android version will be available in early 2015.