Smart Ring Gen3, Size 7, Gold, Sleep Track

Update October 2024: They recently updated their app and all the privacy I was happy about in my previous review was taken away. Starting with app version 6.0.0 the app requires internet access and a full data sync before you can even access your data. It now also requires native code debugging and will crash if you don't allow it to do that. What is native code debugging? Its an outdated tool to detect tampering, mainly used by bank apps, that is easily fooled and doesn't use Androids hardware security tools for verification, but relies on ptrace which exposes info about your device and weakens app sandboxing without granting any benefits. Why would they need to use that you ask? No reason at all that I can think off. Three strikes: requiring network access, requiring a full sync, and requiring ptrace. App versions 5.4.2 and before do not have these disadvantages. This app also does not allow backing up of app data, so if you already updated, and you don't want to give all the info on how you sleep, when you sleep, your health info, your activity, etc, then you are out of luck. You'll have to delete the app and install a previous version, which requires out of play store installation and I don't recommend that for the average non-techy user. You can do it, but you should look up how to verify signatures on the downloaded app since you will have to get it from non-official sources and install it with a third party tool. That is completely safe to do, as long as you understand what you're doing and do it right. All that boils down to this losing credibility as a privacy friendly device. Old review: The app for this ring is amazing, great features and really useful data. My favorite thing though is that it is very privacy friendly, if you take a few steps. Almost all apps and smart devices now require the ability to phone home with telemetry and your info to their servers. This device's app only required access to the internet when I first set it up. After that I denied it network access and it has functioned 100% without issue. That kind of blew me away, normally that would break the app since almost everything out there is about getting your data so they can sell it, but this actually allows you to prevent that after the initial install. Some notes: You must allow full, unfiltered internet access when setting the ring up for the first time, you can't block trackers or anything like that or it won't function. I tried it while blocking trackers and it failed to function. After that initial pairing when your ring is connected to your phone, you can then disable network access and deny other permissions. You still get full app functionality without network access. I can't stress enough how rare that is in today's world.