BTW Monnit.com is main website, iMonnit is their dedicated cloud server for sensor data.
I’ll keep looking at ESP8266 threads mentioned above.
Yes, lots of low tech buyers just want a simple device to water their lawn/garden. Flow sensors are not common in residential irrigation controllers, but often found in high-dollar commercial systems and agriculture business. I personally prefer to have the flow data, especially if I’m away and not on site to monitor status of zones which are watering the plants.