A new breed of app-controlled sprinkler systems has taken design cues from Nest and integrated the utility of automation, simple set-up and conservation. The Greenbox and Rachio's Iro are box-shaped controllers that replace existing overly-complicated controllers. Both link to a smartphone. Programming is intuitive, more like a touch-and-slide approach rather than configuring a knob with too many numbers on it. These smart controllers also consider current weather conditions and, of course, can be controlled away from home. Both companies are taking pre-orders.