I just installed my rachio and it's great. I have a few suggestions, and one has to do with analytics so thought I'd just post them all here instead of sporadically throughout. First, I'd like to be able to input my sprinkler head gpms so that I can see exactly how much water my irrigation uses over time. Obviously you'd have to then collect and display the data. The simple approach you have of selecting the type of head is great, but offering an advanced option to really dial in exact water usage would be great.
Second, when you start a valve as a one time run and then select another valve to run for a certain length before the first is through with its run time, it automatically stops and goes to the one you just requested to run. It seems logical to let the previous valve run for the requested run time, then progress to the next valve.
Lastly, and this is real pie in the sky stuff but, it seems like many local county extension offices publish a daily evapotranspiration rate that can be used to accurately give your lawn (and other plants) the exact amount of water they need. No more, no less. I know your app says it can auto set your sprinklers based on your location and season etc. But if you were able to actually use the evapotranspiration rate for an area to accurately apply the exact right amount of water I wouldn't only use this feature, I would brag to everyone I know about how my lawn gets watered. These numbers are listed in inches and the homeowner would therefore have to enter their sprinkler info as far as how long it takes to lay down a certain amount of water (ex. 1"= 60 minutes for my sprinklers), but this would truly be as accurate as you can get. I would think that most offices would gladly even send this data to you given that a primary goal of this info is to conserve water and this would help accomplish that for all your users. You could set up a site the offices could enter the info in and automate the whole process on your end. If an office isn't supplying the data local users could contact them and request they start. Anyway sorry to go on, but this feature would make your product the paragon of home irrigation controls. thanks.