Classrooms with filtered wifi, homes with one shared connection, a laptop on the road: worksheet planning does not always happen online.
Nothing leaves the folder. Word lists and settings stay on your computer because there is no connection for them to travel on.
No subscription and no account. Compare that with worksheet subscriptions that charge every month or year for as long as you want to keep downloading.
The free Worksheet Generator makes 10 worksheets a day, with no signup and no upload.