Resolutionator for Mac Changes Display Resolution With Shortcut
Mac: Switching between screen resolutions on a Mac just requires you to go to System Preferences, but if you’re looking for a faster way to do this, Resolutionator will do the job either with a keyboard shortcut or using the menu bar utility.
With Resolutionator, you can quickly switch between display resolutions on any connected display. This is great if you’re using a Retina display, multiple displays, or even a smaller 11-inch MacBook Air. It’s $ 3, but you can take advantage of the free trial to see if it works for you.
Resolventator ($ 3) | Lots of gimmicks via MacStories