Yeah, there’s no problem with using Rachio and drip irrigation. Just make sure you set the zone attributes up as close as possible to the drip system specs.
Here are some articles from our support site that might help:
For what it’s worth, I caution against the use of the ‘Precipitation rate calculator’ above. It assumes an area of 1 sq.ft. for each drip emitter and I leads to under-watering your vegetation. I tried using that method and it was frustratingly wrong. It’s actually the reason that I created the drip calculator I posted above.
No offense to anyone, but there have been a lot of people that have had a lot of issues with setting up drip due to the 1 sq.ft. assumption.
There’s a long sordid history. Some of it can be found in the thread where the calculator was being developed. Other threads have people that tried the link you mentioned and they ended up having problems.