Very good app

Use this app constantly. Fast and flexible. A minor complaint is the graphic layout. The horizontal alignment of the original and converted units cramps them and forces smaller text size. And all of the other unit options are just clutter after you select your items of interest. The default OS X Dashboard Unit Converter Widget is a good model of an uncluttered interface for a unit converter app. Still, this my go to for iOS devices.

Quiviran about Units Plus Converter, v2.9