I've used Canon's native remote capture app which stopped working. And I've tried 2 other remote Mac apps that I purchased. They were clunky. But Kuuvik is a keeper. When I shoot product shots for our e-commerce biz I need to have an efficient workflow. Kuuvik nails it. I had version 4. I upgraded to 5, more out of respect for the developer than for a need for any improvements. I am very pleased. Thanks for a great tool.