Buy it.

Before I found this on the App Store, I tried three freeware counterparts on macupdates. One opened a window but did nothing. One required me to download X11, then did nothing. The third wouldnt even open a window. 10.8 incompatibility? Perhaps, but thats on those guys. Do yourself a favor: Save yourself the headaches and drop the ten bucks. Youll be glad you did. Easy, intuitive, and stable. Just do it.

Analog Relic about Metadatics