Sketch's annual cost gives you updates for a year, but if you don't renew you still have a license to run the app and updates up to a certain date. A profession

Sketch's annual cost gives you updates for a year, but if you don't renew you still have a license to run the app and updates up to a certain date. A professional will pay the recurring cost but most people would be fine paying for Sketch once and running that version for years. I still use Sketch 2 without issues. If you don't renew Adobe CC, you lose access to everything. I think the difference is important.