With this app you can use your iPhone or iPad as a scale by now!
Just make sure to put your iPhone on the object you would like to weigh and place it on a soft surface. Because of the fact that the ground is yielding, the acceleration sensor detects the movement and calculates you how much your object weighs!
For each ground you use, your iPhone / iPad needs to be calibrated with a standard weight. The calibration can be done in the settings of the app.
The achievable results of the measurements are primarily depending on the use of suitable surfaces. Good are for example pillows or mattresses. Read carefully the instructions within in the app.
In general, its more a fun App - dont expect to accurate results!
Have a lot of fun with the app - definitely a must-have!