Kaleidoscope 6.6 is out today, introducing AI-powered image alignment built on Apple’s Vision framework. Whether you’re comparing screenshots or photographs, Kaleidoscope will now automatically align images based on their content. In addition, this release brings refinements to the recently introduced Pixel Comparison.
Following a tradition we started last year, this post collects a few illustrated tips about lesser-known additions to Kaleidoscope in 2025. Small features that can come in very handy once you know they exist.
With Kaleidoscope 6.4 we introduced a complete rewrite of the Image Comparison. With that groundwork in place, we can now start to build on it and innovate further.
Pixel Comparison in Kaleidoscope 6.5 is the first major step—a new way to inspect and compare the exact values of individual pixels, down to the smallest color differences.
It took us a tad longer than we had initially hoped, but here it is: the final version of Kaleidoscope 6.4 with the all new Image Comparison — a complete rewrite of one of Kaleidoscope’s three core features.
Today, we’re excited to introduce an all-new Image Comparison in Kaleidoscope 6.4 Beta! This (pre-)release is all about getting the foundation right. We’ve rebuilt the Image Comparison on a completely new technology stack. That means it’s faster, more reliable, and ready for future innovation. From here on out, adding new features will be easier.