The app in general is pretty dependable, as I've been using this app with my Honeywell thermostat for several years now and have only had a few times that an authentication error popped up when opening the app. So, dependability overall I believe is good. Though I think it's lacking a few things. For one, I have ONE thermostat. Why, every time I open the app do I have to select my location, and then select my thermostat?... when I have ONE location with ONE thermostat? As soon as I open the app, I should be directed to that one thermostat. Or, I should be able to edit that out through my profile settings in the online account. This may seem like a small thing, but apps, as well as smart products, are designed and intended to make things "simple" and "convenient". So, make it simple and convenient. After months of having to select a location and thermostat every time to make an adjustment can get a bit frustrating. My only other complaint is that especially for during these hot few months in summer, I can only adjust my schedule to "Wake, leave, return, sleep". I wish I could create a couple more times of adjustability, especially for weekends that I'm at home, to adjust for weather that can range from 70° to 95° and back to 70°within 24 hours. Maybe this is impossible by the internal limitations of the thermostat? Or something bigger? But it would be nice. However all in all, a decent, sturdy and trustworthy app.

App works great. Would be 5 stars if you could export and import schedule. Ability to export normal schedule before editing for vacation or other event. Also very much needed for sites that have more than one thermostat. I will keep asking for this till someone listens. Give us option to not even show microphone, who is that lazy? Last update has caused latency with app, was spot on before. Very nice to be able to see if fan is running now. After icon update, app is buggy when changing temp or time, I see a lot of communication errors that were not there before icon update. Now, app does not notify of WiFi disconnect, at all. Why not allow time input for hold times? Very annoying to scroll for hours of time when you could just dial in a time and be done. Is anybody out there?UpdateApp runs better now. Smooth like before they “updated it”. Still would like ability to save certain schedules for different events. Pain to redo schedule when different needs arise. At a church setting, we have Bible School in summer, revival in fall, and other times when weekly schedule needs changed. If we could save these changed schedules, we could just call them back up into service and not have to manually edit these schedules. We have 5 of these thermostats within our church. No more stars until someone actually reads this and does something to enable this much needed feature.

I’ve had the HW RTH9580 installed using Total Connect now about 2 1/2 years. The app is really great - a mix of “some” services everyone would need - to “some” that have been left off, usually because there is much less request for those. Possibly in the future this could transform into truly 100% full featured - but until then, the few items that do not appear don’t make me lose sleep. For instance:Can’t Change from “Heat” to “Cool” automatically. No problem here, we always have weeks between the needs - giving me plenty of time to manually switch.Can’t set fan to run automatically for “x” number of minutes per hour, in case there had not been any air flow during that period. A nice feature - but one that I would guess very few would really use (to justify the added costs of development)Can’t see a “true” outside temperature, since that info is pulled from the internet for your Zipcode. Hmmm. I can’t really see the great advantage of (installing and synchronizing sensors) the extra work to see if it’s really 37 and rainy as opposed to 32 and snowy. But that’s me, my Zipcode May be one of he more accurate one?Bottom Line - This app has saved us at least hundreds of dollars. We’ve even adjusted the temperature down while on a Mexican vacation after we left town with the temp set at 72. It has also run, along with my RTH9580 without a single problem this whole time. Thanks for this app, and your fine integration to the various thermostats.

I replaced another brand of wi-fi thermostat with this one after the original failed. I bought the Honeywell partly because of the reviews and partly because of the company reputation. It works, but I am a little disappointed at this point. The thermostat does not update the indoor temp properly or often enough so it gets cold in the house before it turns the furnace on and then it overruns the set temperature so it gets too hot inside before the furnace turns off. I thought it was a problem with the unit so I returned it and got another. No difference. I called the support number and got someone overseas who had no idea how to understand the problem or tell me how to fix it. In addition, the unit does not have a function to give me daily unit run times. On the plus side, it is easy to set up and the display is easy to read. I would give this unit 5 stars if it would work correctly and give me some idea of how much the furnace runs on a given day.Update, one year later. The unit has settled in as far as holding temp goes, and I like the feature where it anticipates the heat time needed to meet the temp setting at a given time. Especially useful given that we reduce the house temp to 60 degrees overnight in winter. The unit senses temp drop during the night apparently and calculates the time needed to meet the warm up time in the morning. I would give it 5 stars but there is still no function to view actual run times.