Switch between screen resolutions on your Mac. Bypasses Apple's restrictions on native resolutions and customize your resolution tweaks up to an extreme native 3840x2400 on a 15-inch Retina Macbook Pro or the highest resolution of 7680x4320 on a 5K iMac.
Download of QuickRes 4.9 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program lies within System Tools, more precisely System Optimization. The actual developer of this software for Mac is Inertiactive. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
QuickRes is the quickest and easiest way to switch between screen resolutions on your Mac. With the MacBook Pro with Retina Display, you can set your resolution all the way up to an extreme 3840 x 2400! With other Macs, you can set your resolutions to things you've never seen before, including a HiDPI mode, which is as close you can get to a Retina Display on a standard computer.
You may want to check out more Mac applications, such as Quickr, which might be related to QuickRes.
Screensavers
System Optimization