Acoustic Ruler | iq-tainment.

You know every once in a while something comes along that you just go.  Wait why didn’t I think of that.  Here’s one, a sonic tape measure APP for the iOS.  First they gave us a Level APP now we can measure with the little Monsters.  The link I’ve included is direct to the authors own website.  It can be used in two modes Dual Device or Single Device with a set of headphones.  This is one of the coolest things I think I’ve seen developed as an APP.