Multicopter Vibration check with Ipod (multiwii crius lite ) HD

Fine tuning my Multicopter using Ipod, i found the best app for RC user to check the vibration on Multicopter, go to app store and download iSeismometer for free you can check X,Y,Z Axis and adjust lowpasse filter on the code to avoid wobbling on copter and make the gimbal smooth. Multiwii 2.1 and home made Y6 multicopter HK SS ESC 15-18A 2213N 800Kv Brushless Motor 10X4.7 propeller