Jean-Louis Gassée, writing for Monday Note, offers praises to solo programmers from long ago, leading up to this heaping praise for Acorn:

Newer than Preview but no less ambitious, we have Gus Mueller’s Acorn, an “Image Editor for Humans”, now in version 5 at the Mac App Store. To get an idea of the breadth and depth of the app, scan the documentation on the company’s web site. In addition to “straight” tech doc, there’s an FAQ, pointers to the Acorn communities, and a wealth of video tutorials for beginners, intermediate, and advanced users. (Mueller calls his Everett, WA company a mom and pop shop because his spouse Kristin does the documentation when she isn’t working as a Physical Therapist.)

On my iMac, Acorn 5 is a mere 24.6 Mbytes. Compare this, fairly or not, to apps that weigh in at 1.5 Gbytes or more (Microsoft Word, Excel…), or Pages at 478 Mbytes.

Well done.