by Smart Tools co.
Smart Tools® is a complete package of 6 app sets. It includes 5 Pro sets for a total of 16 tools. In a word, All-in-One.
Set 1: Length, Angle, Slope, Level, Thread - Smart Ruler Pro
Set 2: Distance, Height, Width, Area - Smart Measure Pro
Set 3: Compass, Metal detector, GPS - Smart Compass...