The thermometer itself is fine. Seems accurate and reproducible. It’s fifddly to connect to Wi-Fi and could be much easier with just a little more attention I think.
Two ridiculous pain points; as many others point out, it does not at all integrate with the rest of the withings stuff. There... Show more is no reason this needs to have its own separate app. If you open the Thermo app, it will eventually load data and make it visible in the primary withings app, but you have to open the Thermo app each time first. That’s been going long enough it’s now inexcusable. Unlike in the primary app, where you can explore the data a little bit, graphics etc., you clumsily can just look at a list of temperature measurements. Not very helpful at all, and so much more potential.
As others have pointed out, since around November, the data no longer integrates with Apple health. I suspect they just havent updated it for iOS 14, as the option to turn permissions for data sharing on and off does not exist for the Thermo app, and the instructions in WithingsThermo refer to the old way of doing that. Again, probably the same issue as the other big problem: good thermometer, but they need to step up and integrate the Thermo app with the rest of the withings experience which would make it just about perfect. WithingsThermo is lame.