Boldr Energy 4+

My experience has not been as bad as the others — set up took 5 minutes, I find the app simple to use — but the schedule is erratic. It seems to be on another time zone. I didn’t bother putting my home address during set up, and the default one was Lithuania. So at first the schedule was responding to Lithunian time zone (10 hours later). I changed the address, but it didn’t do anything. Then I adapted the heater’s schedule to fit the time zone it thinks it in. That worked partially. But there are random changes in schedule that don’t seem to be time zone related. It starts heating middle of the night, etc. Might try to delete the app and start over.
That said, I can control the temperature manually. That works well.

Set up worked fine for me (I was previously using the other Boldr app, which is apparently being deprecated and has its own serious issues). The version works with Google WiFi routers, but the app works only about 60% of the time. And when it does work, it’s very confusing to use. This makes it very difficult to actually set heating schedules that work - I found myself having to manually set the temperature each time I wanted to use a panel because the schedule didn’t work. Hope they improve it quickly because it’s almost unusable.

While the app may need a little more work, the customer service I’ve received from their support team has been fantastic. The issues that popped up with my order were quickly resolved. Have three units in my home and they work great in the areas I put them in.

If you’re a techie, you’ll notice these units have super reliable Shelly controllers internally. Integrated them with my home automation system (Home Assistant) and they work flawlessly.