Ruler on distance

Application to measure distance, size and speed.
Do you want to measure your stuff or something far? How far is something? This application can calculate size, distance and speed of objects. You have to know how far is object to measure size or how big is it to know distance. And it is all. Take a photo or choose from gallery, draw line or tap to find an object, enter distance to object or size of it and application will calculate what you want.
Results are saved so you have simply access to all measurement which you did.
How does speedometer work? App makes a few photo, you enter distance to object or size of it (like when you measure size or distance) and application calculate speed. You can move a phone while you`re taking photos - application calculates a correction.
Units: centimeters, meters, kilometers, inches and miles.
Units for speed: meters per seconds, kilometers per hours, miles per hours.
Results are connected with devices and hardware.

Any suggestion, wrong results? Write mail!