Recovery
A daily readiness read from overnight HRV, resting HR and temperature trend.
Now reconciling 8 wearables + labs
Every signal.
Every signal.
One source of truth.
The Sage + Stone app unifies Oura, Apple Watch, WHOOP, Garmin, your CGM and your labs into one daily read — with an AI coach that catches what no single device can.
Free on iOS — download now. Android coming soon.
Listed on the App Store as “Sennova” — our former name.
Connects with
Apple Watch
Oura
WHOOP
Garmin
CGM
Apple Health
Lab results
Sage + Stone hardware · Pre-launch
Meet the Sage + Stone Cuff
Luxury biosensor cuff
HSA/FSA: may be eligible with a Letter of Medical Necessity
Sage + Stone Cuff
Fine jewelry that reads your body from the inside of your wrist — and feeds straight into your unified read. No screen. No subscription. Ever.
The #1 reason to choose the Cuff
Worn on the volar wrist — a cleaner optical window than a watch.
A watch sits on the back of the wrist — the worst optical window, where tendons and motion scatter the signal. The cuff reads from the volar side: the soft underside, where the radial and ulnar arteries run close to the skin. A better signal site, in something you'd actually wear to dinner — so the data reaching your unified read is the data worth trusting.
$450
$295
Founding price one-time ships 2027*
Your Cuff includes Sage + Stone Premium free for life — the app that unifies all your wearables into one read. (Prefer to use the app with your other devices only? That’s a monthly subscription.)
Finish Gold
Founding pre-order · charged today · fully refundable until it ships (2027)
Private by design
Feeds your unified read
2-year warranty
Also pre-launching · the everyday version
Meet the Sage + Stone Sport
Everyday biosensor sport cuff
Sage + Stone Sport
The same sensor array and the same unified read — in a flexible, soft-touch sport material built to train, sleep and shower in, with a hidden dead-front LED display that wakes when you tap it. No subscription, ever.
The #1 reason to choose the Sport
It bends to your wrist — loosen or snug the grip by hand.
Built from a flexible, skin-safe soft-touch sport material over a sprung core, the Sport gently flexes open to slip on, then springs back to hold the sensor array against the volar wrist. Open it a little for comfort, close it a touch for a tighter optical read — no clasp, no fuss.
$450
$295
Founding price one-time ships 2027*
Same price as the Cuff — on purpose. Same sensor array, same app free for life, same no-subscription-ever promise. You're paying for the platform, not the metal. The material is the only choice.
SAGE MODE — a hidden dead-front LED display, invisible in the matte band until you tap it, then it lights up your time, steps, heart rate and daily Sage movement score.
Movement & energy figures are everyday estimates for motivation — not medical readings.
Colour Black
Founding pre-order · charged today · fully refundable until it ships (2027)
What it powers
Your body talks. Sage + Stone translates.
One cuff, read across every system — so the same stream of data becomes recovery, sleep, heart, stress and metabolic insight at once.
Sleep & rest
Staged sleep, latency and disruptions — reconciled with the rest of your stack.
Heart health
Continuous HR and HRV with resting-rate and rhythm trends over time.
Stress
Day-long load from HRV and skin temperature — see when to push and when to ease.
Metabolic
CGM-ready: pair a glucose sensor and the cuff aligns it with sleep and activity.
Women’s health
Temperature-based cycle and phase tracking, folded into your daily read.
The details
What’s in the box & under the hood
Technical specifications
| Sensors | Optical HR/HRV array with multi-LED SpO2, a dedicated skin-temperature sensor, and a 3-axis accelerometer for motion rejection. |
|---|---|
| Metrics | Heart rate, heart-rate variability, blood-oxygen (SpO2), skin temperature, sleep stages, respiration trend. |
| Display | The Cuff: none — screen-free fine jewelry. The Sport: a hidden dead-front LED dot-matrix (“Sage Mode”) showing time, steps, heart rate & your daily Sage score — invisible in the band until tapped. |
| Materials | Surgical-grade steel core with gold, rhodium or rose-gold finish, over a sealed optical sensor module. Hypoallergenic; a sprung tempered core holds a snug, adjustable fit. |
| Battery | Up to 7 days per charge · wireless magnetic charging dock · ~90-min full charge. |
| Connectivity | Bluetooth Low Energy · pairs with the Sage + Stone app for iOS and Android. |
| Water resistance | 50 m (5 ATM) — swim, shower and sweat-proof. |
| Wear & fit | Volar-wrist wear · sizes S / M / L · fits 14–19 cm wrist circumference. |
| In the ecosystem | CGM-ready · feeds the Sage + Stone unified read, AI coach and early-warning alerts. |
Two ways to wear it — same read, different material
Every Sage + Stone reads from the volar wrist and feeds the same unified read. The difference is the body it's wrapped in — and both gently bend, so you can loosen or tighten the grip by hand until the sensor array sits flush against the skin.
The Cuff — fine jewelry
A surgical-grade tempered-steel core finished in gold, rhodium (silver) or rose gold, over a sealed optical sensor module. Hypoallergenic and water-safe to 50 m. The sprung open-cuff form flexes by hand: ease it open to slip on, press it gently closed for a snug optical read. Gold · Silver · Rose Gold. Sizes S / M / L.
The Sport — soft-touch, with Sage Mode
The identical sensor array and bypass shape, molded in a flexible, skin-safe soft-touch sport material over the same sprung core. Lighter and more forgiving, built to train, sleep and shower in, and it bends open and closed to dial in the fit. Adds Sage Mode — a hidden dead-front LED dot-matrix display that stays invisible in the matte band until you tap it, then shows time, steps, heart rate and your daily Sage movement score (everyday estimates for motivation, not medical readings). Matte Black · Matte White. Sizes S / M / L.
Your AI coach
Meet Stone, your AI recovery coach
Stone is an AI coach — not a human, and never a clinician. Stone reads your own baseline across every connected signal and explains your personal trends in plain language: what shifted, what it may support, and what's worth bringing to your provider. It flags a Pattern Deviation when something drifts from your normal — observational context, never a diagnosis.
Stone is an AI assistant. Everything Stone shares is observational, based on your personal trend — not medical advice, and not a clinical assessment.
Where are you right now?
Pick one and Stone tailors your first read to you. No email needed.
The app · pricing
Simple pricing
One subscription unifies every wearable and lab in a single timeline, with a daily AI read and early-warning alerts. Pick the plan that fits — upgrade or cancel anytime.
For one connected life
Sync
$9.99 / month
Every wearable and lab in one place, reconciled into a single daily read.
- Unify 8 wearables (Apple Health, Oura, WHOOP, Garmin & more)
- Connect CGM and FHIR R4 lab records
- One reconciled daily read across all signals
- Export and own your data, always
Most popular
For people optimizing daily
Plus
$19.99 / month
Everything in Sync, plus a daily AI coach and early-warning alerts.
- Everything in Sync
- Daily cross-signal AI coach
- Early-warning anomaly alerts
- Trends and history across every device
For the fully dialed-in
Pro
$39.99 / month
Everything in Plus, with clinical-trial matching and priority support.
- Everything in Plus
- Clinical-trial matching from your data
- Pre-visit summaries for your doctor
- Priority support
Clinical-trial compensation is paid in dollars by the study sponsor and varies by study; matching surfaces eligible studies and is never a promise of enrollment.
Your health story is yours — forever.
Export it anytime, even after you cancel. We never sell your data, and we never sell or hand over your menstrual, cycle or lab data to third parties or law enforcement.
Lifetime
$249.99 once
Own your complete health record permanently — no subscription required. Your data, your timeline, kept yours.
Ready for a plan? Subscribe in the app
Plans live inside the Sage + Stone iOS app — download it free, pick your plan there, and your access syncs to every device: wearables and labs unified, daily AI coach, and trial-match.
Get the app — plans insideListed on the App Store as “Sennova” — our former name.
Employers, insurers & life sciences
Bring the verified health-data layer to your population.
Match members and employees to clinical trials, stand up a consented multi-device health stream, and power B2B2C wellness with a privacy-first, opt-in data layer.
- Trial-match across a consented member base, IRB-ready
- Employer wellness — verified behavior, real savings
- A verified, multi-device data feed your team controls
Request a demo
Tell us what you're solving — we'll reach out within one business day.