If a third-party Oura app suddenly stopped working, this is probably why. Since late 2025, Oura requires an active Membership for API access on Gen 3, Gen 4 and Gen 5 rings — a change that quietly broke a lot of companion apps. Here’s the situation, plainly.
For years, any Oura owner could connect a third-party app to their data through Oura’s API, Membership or not. That ended in late 2025: API access now requires an active Oura Membership on Gen 3, Gen 4 and Gen 5. The older personal-access-token route that some tools relied on was wound down at the same time.
The requirement applies to Gen 3, Gen 4 and Gen 5. Gen 2 is exempt — those rings keep API access without a Membership. So whether you’re affected comes down to which generation you wear: a Gen 2 owner is unaffected, while a Gen 3, Gen 4 or Gen 5 owner now needs an active Membership for any app to read their data.
Every companion app — desktop tools, analytics dashboards, integrations — reads your data through that same API. So on a current ring, letting your Membership lapse doesn’t just dim Oura’s own app; it cuts off everything built on top of it. It’s worth factoring into the real cost of the ring if companion apps are part of why you bought it.
If a connected app stops syncing, check your Membership status first — an expired Membership is the most common cause now. On a Gen 2 ring, look elsewhere (a re-authorisation or token issue). If you’re shopping for a ring specifically to use with third-party tools, factor the Membership into the running cost on the newer generations.
Vitra connects through the official Oura API, so the same rule applies: on a Gen 3, Gen 4 or Gen 5 you’ll need an active Oura Membership for it to read your data; on a Gen 2 you won’t. Either way, once the data reaches Vitra it’s analysed entirely on your own machine.
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