Do I need to keep a computer on constantly to use LawnCheck?

[Jim]

LawnCheck is a web application.  Once your controller is configured, no computer is needed to run the controller or to obtain weather data.  You can turn your computer(s) off at night or anytime, and LawnCheck continues to work.

Once your controller is configured your schedules are set and maintained using a web-browser  from any Internet connected computer (Windows, Mac, Linux, SmartPhone)  You can also issue ad-hoc irrigation cycles through the browser.

Your controller generally only needs to be configured once, and that takes about 5 minutes.  Controller configuration software is available here.