Sketch:

We’ve been considering our options for some time. Over the last year, as we’ve made great progress with Sketch, the customer experience on the Mac App Store hasn’t evolved like its iOS counterpart. We want to continue to be a responsive, approachable, and easily-reached company, and selling Sketch directly allows us to give you a better experience.

There are a number of reasons for Sketch leaving the Mac App Store—many of which in isolation wouldn’t cause us huge concern. However as with all gripes, when compounded they make it hard to justify staying.

Not the first and certainly not the last developer to make this decision. As detailed in this blog post, the Mac App Store simply doesn’t work for some developers. Personally, I avoid using it whenever possible.