I'm a new Rachio customer and utilize both the web interface as well as the Android mobile app. I'm having absolutely no issues with the web app but a number of issues with the Android app. I am using the app on a Nexus 6p running Android 6.0:
1) The Water Use section on the Summary screen does not update. The only way to get it to update that I have found is if I sign out of the app and sign back in.
2) The Reports tab displays info sporadically. It sits there for minutes trying to populate the information, and most of the time it never does. Sometimes it does complete; however, the water used info will be either blank or not reflect up to date info.
3) Not sure if it supposed to show this, but on the Summary page, the status of the device never shows when it is watering. It always just shows "Online".
4) I'm using Flex Schedules. If a zone has been watered but is not due for another round of watering for a week or two out (not really sure how far out it needs to be), the zone will show up as "Not Scheduled". If I log into the web interface, it shows, for example, the affected zone as "Will Water after December 12".