Unlike other programs in the laser line to measure the distance to the object is actually used laser.
Attach the mobile device an ordinary laser pointer and you will get a new tool for measuring.
Just point the laser beam at an object, and drag your finger across the screen, while the blue line will not cross point of the laser, and you see the result.
It also supports static mode for which the laser is not needed. It allows you to set your mobile device on the stand and measure the length of objects placed in front of the camera lens.
Before the measurements, calibrate the product, and you can use it.