Brett Terpstra's Markdown previewer goes from $14 to $8.99 for Black Friday (through Monday).
$8.99 on the Mac App Store
$2.99 on the App Store
From developer Hippo Foundry, Snipboard is an iOS 8 keyboard that allows you to create snippets in the Snipboard app (shipping address, email signatures, etc) that become buttons on the Sniboard keyboard. Kind of like TextExpander for normals.
Free on the App Store
50% off Pixelmator
Famed photo editing app for the Mac is half the price at $14.99 for Black Friday and the 50% iPad app discount has been extended for another week.
$14.99 for Mac on the Mac App Store
$4.99 for iPad on the App Store
Metapho 1.1 adds a iOS 8 extension that lets you share photos minus the metadata. MacStories' Federico Viticci explains.
Little Snitch and Launch Bar both 50% off
Objective Development has cut the prices of their excellent network monitor Little Snitch and Launch Bar by 50% for Black Friday.
Little Snitch: $34.95 > now $17.48 at Objective Development
Launch Bar: $29.00 > now $14.50 at Objective Development