20 ways to use your smartphone

#19: iFitness

Check your clipboard at the gym door. Meet your new personal trainer, complete with a database giving clear instructions and pictures to more than 100 exercises, sorted by body part and muscle targets. Save your data and record your progress.

#20: Police Miranda Warnings

Displays national standard Miranda warnings established by the U.S. Supreme Court. Access the warnings at the push of a button rather than digging through your wallet.