A carpenters level utility that contains two modes. The first mode is a single plane level much like the standard carpenters level and allows the user to easily level an object along the X axis. This is handy when hanging pictures on walls to ensure that they are straight. Also good for anything else where a standard bubble level is used.
The second mode is a level that works in two planes and allows for the simultaneous leveling of an objects X and Y planes. This is good for surfaces that need to be perfectly level such as lab tables, floors or countertops.
The single plane level works using the edge of the iPad or IPhone, while the dual plane level requires being face up and flat on a surface.