My water bill went down by ~$60 / month after I’ve installed my controller years ago. Should major changes occur which would make me rethink being a member (such as company going out of business or a sudden huge charge for cloud access without corresponding additional features), my controller has already paid for itself several times over. ROI of Rachio is very short, in part due to there being no monthly fee.
Rainmachine is not completely open, the source code, as far as I can tell, is only available for their basic 8 output model (similar as if Rachio decided to release source for Gen 1 controller), and they only claim that their API and evaporation formula will be open sourced (so is Rachio for that matter as far as API). Reason they’ve released the source code at all, appears to be due to Linux license of the distribution that they’ve used as a base of their first controller. I don’t force the source code of newer models to be made available at this point.
Should rainmaker go under, or decide to start charging for services on their latest controllers, the open source community will be ill equipped to keep the services active.
I may be wrong in my analysis, I welcome any feedback from those more knowledgeable.