Earlier this year, I tried three of the alternatives (below) that offered free trials. They were OK. Then I downloaded the desktop (Mac) trial version of Gigapixel AI (at the time vers. 6.3.3). The differences among all four can be subtle, but I pre-ordered vers. 7 of Gigapixel on the basis of that testing. And now, all I can say is "Wow!" I am an amateur photographer, not a professional, so your experience/opinion may vary. But as an amateur, let me repeat: "Wow!" And it has only gotten better with the subsequent updates -- the impact on long-ago photos from my beloved-but-ancient Olympus C2100UZ (2.1 MP... not a typo) is astonishing. Even those from my Nikon D7000 (16.2 MP) derive some benefit. Worth every penny!!!

I tried three of the alternatives (below) that offered free trials. They were OK. Then I downloaded the desktop (Mac) trial version (6.3.3) of Gigapixel AI. The differences among all four can be subtle, but I pre-ordered vers. 7 of Gigapixel on the basis of that testing. And now, all I can say is "Wow!" I am an amateur photographer, not a professional, so your experience/opinion may vary. But as an amateur, let me repeat: "Wow!"

So this is basically just a browser alternative. I have a simpler solution: read Kindle content on Kindle Reader on my iPad and switch to ChatGPT, etc., when I need a fix. One less login contact to create/wonder if it will be hacked. Done.