Is there some way to determine which version of the Rachio App I have installed on my iPhone?
Yes after opening app and while on screen with your location, click the person icon on the upper right side and scroll to the bottom. It’s listed below Sign Out. You can compare this to the version in the App Store.
Or, on the Rachio controller screen, tap ACCOUNT, and you’ll find the version and build numbers immediately below the SIGN OUT button