Danfoss Link™

I\m a big fan of the Danfoss link system. Unfortunately, the API is super-closed (so you cannot access+save your own data), and the app is pretty bad. Basically, it is a stripped-down version of the Central Controller (CC). From the app you can start/stop heating, but not for individual rooms/zones - it's all or nothing. In practice, this means that you normally must go to the CC anyway. In the app I can actually see the measured temperature from all the thermostats/room sensors in the house - and whether the individual rooms presently have active heating. But you cannot save or log the information. Although the data is available, there is no interface/API available. If for some reason you want to turn off heating in some rooms, while turning on heat in other rooms you will be out of luck. This cannot be done - neither from app or CC. From the CC you can turn on (or off) heat in a number of rooms, but not both. From the app you can only start or stop heating in the entire building at once. For communication, the app contacts a Danfoss "cloud server", which then communicates with your CC in some "secure" (aka obscure) way. Expect things to break if Danfoss ever closes that service. Running an instance in a local cloud (under your own control) is out of the question. According to Danfoss, they do not store/save/log these data on their servers. I would rather keep the data in house (and store time series in a DB), but that cannot be done with this system (with or without the app). Obviously, Danfoss must have an API, but I am not allowed to get it. This app is "not compatible" with my Motorola running Android 8.1. I cannot see why, just "not compatible" in play store, so I cannot even try to install it on that device. Runs fine on Android 8.0 on a Samsung. Overall, the devices/hardware are great; The CC and app are so-so, and a useful interface (API) is simply not available.

the app was very slow in the past in terms of interactions with the controller. now after the last sw update of the controller to pause the heatining from app seems to work rather sporadic(app shows paused but controller not, only after the app restart you can see if you really have paused the heating). please fix this bug and connection speed between the app and controller

Danfoss Link system is a great one and application also has a great potential.. app is nice designed but a bit simple and updates not kept regularely for adding new features which is a pitty per the tech Danfoss has in the hardware . New features like current outside weather would be a nice addition and easy to be shown or a history of rooms temp.The Google Assistent would be a plus near Alexa, but appreciating schedules easy setup and intuitive modes having. Hope to be supported more often.