The Omni Group, makers of the popular productivity apps like OmniFocus, OmniGraffle, OmniOutliner, and OmniPlan have released a small, free OS X app that allows users who have previously purchased versions of its software through the Mac App Store to qualify for upgrade purchasing through the company's web store for the next version of its apps.
Called OmniKeyMaster, the app works by searching your hard drive for Omni app from the Mac App Store. It then lets you purchase the newest version of the app at upgrade pricing. As Omni Group explains on their website:
OmniKeyMaster is a simple app that finds App Store copies of Omni apps installed on your Mac, then
