So I want te find the most feature rich smartwatch that doesn’t send data to the manufacure. I have tried the Pinetime watch, but it died after 6 months.
Infinitytime (OS) was not realy that feature rish, so I want to secrufise an Open Source watch OS. But I still want to connect it with Open Source software, like gadged bridge.
What is my best option under €200? Maybe the Xioami Mi band 7 (€50) that is supported by gadgedbrigde?
The latest 7 looks very nice. 16 days battery life, 5 days with always-on apparently… sadly if you want to pair it with your phone, you need the Xiaomi App and then (as OP asked) you get trapped in privacy Hell and send all your data (Health, Location, User Content, Financial Information, Contact Info and identifiers) to china. At least on iOS as I can read in the App-Store description. Bummer. It looks like a nice watch.
You can just use gadgetbridge after the initial pairing and key generation. You need to install the xiaomi app once in some burner phone with empty contacts, or maybe you can pair it without giving it access to contacts first. Once you have the key (described in the gadgetbridge guide) you can just dump the official app and use GB without using any xiaomi data/servers.