BodyBalanceChecker (app.pentandroid.bodybalancechecker) on Google Play
It is an application for measuring the posture.You can when standing, one leg at the time, measuring the balance of the body at the time of the walk, to compare.Because I use the acceleration sensor of the terminal, there are times when it does not work properly by the terminal.Please try the free (Lite) version.Please refer to the manual from here how to use.https://sites.google.com/site/pentandroid/bodybalancechecker_manual/bodybalancechecker_manual_eg