I have a Flume water meter monitor. It reports my water usage on a per minute basis. I like it because it does not require any plumbing changes. I also have problems with circuits that become broken for a variety of reasons i.e. dogs, gophers, kids etc. When these problems occur it can be days or weeks before I notice the issue. I have a lot of circuits and they run in the middle of the night. My worst circuit goes from 5 GPM to 18 GPM when an issue occurs A lot of water wasted not to mention dollars

What I would like to see is, each time that the Rain machine turns a circuit on, it reports to Flume the: circuit name, start time and date, run duration and expected GPM from the Rain Machine stored data. The Flume could then store expected vs actual usage  in the info they already accumulate on my house. They could then display history usage by circuit. MORE importantly they could detect and  report an error if GPM seen is out of some expected range compared to the expected value.

This integration could also benefit the Rain Machine side,  

After each circuit ran I would also have Flume report the actual circuit usage back to the Rain Machine. A variety of benefits could occur. 

First. if desired. the flume could accurately populate the Rain Machine zone GPM info initially and/or refresh it periodically

Second usage data would be 100% accurate not just a number derived from multiplying GPM by the time a circuit ran. Total water savings /usage would be spot on too.

Third The rain Machine could also provide alerts for the same excessive usage and perhaps other conditions. It could even suspend running a circuit until the user fixed the problem.

This could be marketed as "automatic excessive water usage alert  on a  per circuit basis in real time"

A win for both Rain Machine and Flume. I would be willing to pay a monthly fee for this feature.