Concentric
Get Concentric
Concentric is not listed in App Store search — this link is how you get it. That is not temporary and it is not a beta: it is distributed by link on purpose.
iPhone and Apple Watch
The Watch app installs from the Watch app on your iPhone once Concentric is on the phone; there is nothing separate to buy or download.
Android and Wear OS
The Android version is built and runs on a phone and a watch, and it shares the exact same database schema and sync format as the iPhone — which is why signing in on one and then the other moves your log rather than duplicating it.
It is distributed through a closed testing track, so you have to be added to it. There is no public Play Store listing and there is not going to be one.
Not yet in place: There is no Google Play closed-testing opt-in URL. (Create the closed testing track in the Play Console, add a tester list or Google Group, and copy the opt-in link here.)
What you need
- iPhone — iOS 17 or later
- Apple Watch — watchOS 10 or later
- Android phone — Android 8.0 or later
- Wear OS watch — Wear OS 3 or later
What to check before you install it
- The In-App Purchases section on the listing. It is empty, and a listing cannot hide one that exists.
- The privacy label. It says what leaves the device and it matches this site's privacy page.
- The seller. An individual, not a company — which is the whole business model, stated where you can read it.
You can start without an account
Install it, answer one question about backup — a flat no is a real answer — and log a set. Nothing else is required, then or later.