Appl-o-Meter

Appl-o-Meter allows distance measurement on a surface by rolling iPhone.

Get it here

HOW DOES IT WORK?
1. Select the measurement unit (inch, cm or apple).
2. Select the reference point position.
3. Place the lower side of your device to the start point and tap Start.
4. Roll your device along the measurement line.
5. Save your result by tapping one of the square buttons.