Slappstick has announced AppyDays for Mac 2.0, an update of their Mac application, which tracks currently discounted apps. In this version almost every aspect has been rewritten for faster performance.
AppyDays tracks discounted apps for both the Mac and iPad/iPhone App Stores, as well as current discounts from MUPromo website. It requires Mac OS X 10.6 or higher. It’s free and available exclusively through the Mac App Store in the Reference category.