It comes down to the subscription fee. Actually downloading the app and adjusting the settings is usually a simple, cost-free process (although some VPNs do have IT-level options for tweaking security ...
On the other hand, more extensive lawns call for a broadcast alternative like the Chapin 150 lbs Black Hopper Auto-Stop Tow Behind Spreader available at The Home Depot. And liquid potassium for lawns?