Be cautious of sites claiming to offer "free activation keys" or "key generators". Because Desktop-Reminder uses a unique file-based license

Since the core software is free, you don't need an "activation key" to make it work. Here's the only safe and reliable method:

A: No. The basic version (Desktop‑Reminder 3.x) is freeware for Windows. The Pro edition requires a paid DesktopReminder 3 Pro activation key to unlock its extra features.

If you can tell me you're facing, I can help you decide if upgrading to Pro is the best solution for you. Share public link

: Open the About dialog via the Help menu; the license type should now display as PRO .