NextRing App

Your body. Your data. Any device.

NextRing App turns the signals from your smart ring into clear, honest health intelligence — and it does the thinking on your phone, not in someone else's cloud.

WHAT YOU GET
• Today — three daily scores at a glance: Recovery, Effort and Sleep, with the story behind each number.
• Sleep — an honest, re-staged night view you can actually read and edit.
• Vitals — heart rate, HRV, SpO₂, skin temperature and activity, from live readings to long-term trends.
• Body — your BioAGE and body signals, measured against your own history.
• Trends & patterns — see how you change against your own baseline, not a population average.
• Workouts — start a session, record your route, and see what it cost you.
• Cycle & women's health — menstrual phases, fertile window and period prediction, with a calendar you can browse months back and ahead.
• Coach — ask your own data a question and get an answer built from what your ring actually measured.
• Clubs & sharing — accept your club's invitation with one tap, choose exactly which metrics your coach sees, and end sharing at any time.
• Home-screen widget — your day, one glance away.
• Your language, your text size — English, German, Spanish, Italian, French and Finnish, and the app follows your iPhone's text size setting.

BUILT LOCAL-FIRST
Your phone is the system of record. Every score is computed on the device from your own history, and the app keeps working with no connection at all. Nothing leaves your phone unless you switch it on.

YOUR DATA, YOUR CALL
• Export anytime as JSON, CSV or PDF.
• Delete anytime — the data on your phone, and your account with it.
• No advertising, no ad identifiers, no third-party analytics.
• The account is optional. Sign in only if you want cloud sync, club sharing, the coach, order status for your hardware, or account deletion from inside the app — everything else works signed out.
• Cloud sync is off by default. Switch it on with your explicit consent and your ring's measurements are also stored on our EU servers — so you can see them in the web portal and share them with a club you choose, kept up to date in the background. Switch it off and sharing ends.
• When you ask the coach a question, the app sends a small set of derived values — scores, trends, deltas — to our EU servers and on to our AI provider. Never your raw measurements, and never without you asking.

APPLE HEALTH
Optional and read-only. Connect it and your iPhone or Apple Watch fills the activity gaps for the hours the ring was not worn, adds workouts you recorded elsewhere, and cross-checks your sleep. The app never writes to Apple Health.

WORKS WITH YOUR HARDWARE
Built to be hardware-agnostic. Today it pairs with the Nexum Ring and compatible JC Vital rings and bands; more devices are on the roadmap — so you can change hardware without losing your history.

NO SUBSCRIPTION
The app is yours after a one-time device purchase. No mandatory subscription to read your own body.

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NextRing App is a wellness and fitness product and is not a medical device. It does not diagnose, treat or prevent any disease. For medical questions, talk to a qualified professional.