Uv-Outfit Smartr90

Uv-Outfit SmartR90 lists compatibility with the Blender 2.8x and 2.9x lines, specifically versions 2.8, 2.81, 2.82, 2.83, 2.9 and 2.91. If you are running one of those releases, the addon is intended to work with your setup. For newer Blender versions beyond that range, compatibility is not stated, so it is worth checking the developer's page before installing to confirm the addon runs as expected on your current build.

Uv-Outfit SmartR90 works from each UV island's bounding box. It measures the island's greatest size and uses that to orient the selection either vertically or horizontally, applying what the developer calls a "smart" method for rotating islands that have ended up wrongly oriented. You select the UV islands you want to fix, and the addon reorients them vertically or horizontally based on that bounding box measurement.

Uv-Outfit SmartR90 is listed as free in this catalog. Licensing terms can change over time and are set by the developer, CGjazziQ, who distributes the addon under a royalty-free license. For the most current pricing and license details, check the developer's page directly rather than relying on a figure quoted elsewhere. That page is also where you can confirm what the royalty-free terms cover for your particular use.

Uv-Outfit SmartR90 includes documentation with the addon, so there is reference material available once you have it installed. A demo video is also available if you want to see how it works. Between the two, you have a written reference and a video to draw on. For anything not covered there, the developer CGjazziQ can be reached through the product's page on the source site.