You’re tracking everything. Is any of it telling you the truth?
Signal fuses your labs, wearables, body composition — and the cognitive battery no tracker has — into one deterministic 0–100 score. It shows decline before symptoms. The math is published; the AI never sets your number.
No new device required — connect the trackers you already own. Cancel anytime.
Every wearable stops at your skin. None measure your brain.
Across the entire consumer-longevity market, zero trackers ship a validated cognitive battery. Signal runs a 6-minute, clinically-validated battery and folds it into your score — the one signal the $55B longevity industry leaves on the table. For anyone with a family history, it’s the measure that matters most.
Everything you track, finally saying something
A look at the Signal app and dashboard.
One number you can actually trust
Your whole stack — wearables, labs, body composition, cognition — fused into a single deterministic 0–100 Signal Score with a Red / Amber / Green readout.
- Computed by published, versioned math — not a black box
- Red / Amber / Green so you know when to act
- The same score on web and on your phone
The one signal no tracker measures
A 6-minute, clinically-validated cognitive battery folded into your score — the brain-health measure every wearable skips.
- Reaction time, attention, processing speed & more
- Tracks change over time, surfaces drift early
- Matters most if decline runs in your family
Connect what you already own
Oura, Garmin, Apple Health, Whoop, Withings, a Hume scale, clinical labs — webhook-first, ~30-second sync. No new device required.
- Apple Health & Health Connect on-device
- Direct links for Garmin, Oura, Fitbit, Withings, Whoop
- Honest status — “awaiting first reading” until real data arrives
See decline before symptoms
A Kalman filter with CUSUM change-detection watches your trajectory and flags a downward trend while you can still act on it.
- 30-, 90- and 365-day views of every signal
- Early-decline watch on the metrics that matter
- Estimates carry a stated confidence band — never false precision
Snap a meal, keep it private
Photograph a meal and an on-device model logs it — the image never leaves your phone. An honest food diary, not a number that games your score.
- On-device analysis — no cloud image processing
- Calories & macros captured automatically
- A personal log — it does not change your Signal Score
The DNA file you already have — finally put to work
Upload an export you already own, see an honest genomic profile, and turn predisposition into the handful of changes that actually matter for you.
Bring the DNA you already have
Drag in your 23andMe, Ancestry or raw VCF export — no new kit. We parse and quality-check it server-side, deterministically, then you can erase the raw file whenever you want.
- Works with 23andMe, AncestryDNA, MyHeritage & raw VCF
- Reproducible server-side parsing — not a black box
- Your raw genotypes are yours to delete (GDPR Art. 17)
Your genome, read honestly
Ancestry composition, ancestry-adjusted polygenic risk for five traits, and a genomic biological-age delta — every figure labelled as predisposition, never diagnosis.
- Ancestry-adjusted percentiles (principal-component corrected)
- Five traits incl. cardiometabolic & genetic BMI
- Illustrative, non-diagnostic, GINA-protected — never shared with an employer
Context that points to what you can change
Your genome shows which modifiable levers matter most for you — and the Signal companion reads it alongside your numbers to explain, in plain language, what to focus on.
- Turns predisposition into high-leverage, modifiable actions
- Personalises coaching to your biology
- Your DNA is context, not a verdict — the score stays measured from your body
Honest about what genetics can and can’t do
Your genome here is context, not a diagnosis. Polygenic scores are ancestry-adjusted and clearly labelled as predisposition. They sharpen your coaching and show you the highest-leverage, modifiable levers — they do not silently change the Signal Score your body earns, and your DNA is never shared with an employer (GINA-protected). You can delete the raw file anytime.
A companion that remembers — and never decides
Ask it anything about your health in plain language. It reads your own numbers, explains what they mean, and remembers what matters to you between conversations — so the advice gets more useful over time, not more generic.
Remembers what matters
Your goals, your routine, and the interventions that actually worked for you — carried from one conversation to the next, so you never start from scratch.
You stay in control
View, edit, or erase anything it remembers, any time. Your memory is yours — it’s there to help, not to lock you in.
Explains, never decides
It puts your deterministic results into plain language. It cannot move your score, change a traffic light, or raise an alarm — those are computed, not generated.
AI you can trust: it explains, it never decides
The number that matters is fixed math. The AI’s job is to make it make sense — and to do the quiet work in the background.
Your score is math, not a guess
The Signal Score is a fixed, published formula. Same inputs, same number — reproducible and independently checkable. The AI cannot change it.
Estimates show their uncertainty
Where we infer a trend or a biological age, it comes with a stated confidence band that updates as more data arrives. No false precision.
The AI only explains
It turns the numbers into plain language. It cannot move your score, change a traffic light, or raise an alarm — those are computed, never generated.
On-device meal analysis
Photograph a meal and the analysis runs on your phone — the image never goes to the cloud.
A device library that stays current
A background research job keeps the list of supported wearables and scales up to date on its own.
One verdict from your whole stack
Most apps are half a stack. Signal is the verdict engine the others were missing — it unifies what you already pay for.
Connect what you own
Oura, Garmin, Apple Health, a Hume scale, your labs — webhook-first, ~30s sync. No new silo.
Deterministic score
z/LMS normalization, inverse-variance fusion, Klemera–Doubal biological age. Reproducible — the LLM only explains it.
Decline before symptoms
A Kalman filter with CUSUM change-detection surfaces a downward trend while you can still act on it.
No fake numbers. A real, versioned score.
We don’t sell you a debunked “$3.27 saved per dollar.” Every estimator behind your Signal Score is peer-reviewed and the score is stamped with its version. Your data is yours — export it as FHIR anytime (GDPR Art. 20).
Priced like a subscription, not a luxury panel
Start free. Upgrade when you want the whole picture.
Signal Lite
Connect one device, get a real Signal Score from your wearable.
- Wearable-only Signal Score
- 90-day trend
- Connect Oura / Garmin / Apple Health
Signal Pro
The full fused score — including the cognitive battery no tracker has.
- Full fused Signal Score (all modalities)
- Validated 6-minute cognitive battery
- Decline-before-symptoms alarm (Kalman + CUSUM)
- Food analysis + full-context chat over your data
- ρ-ranked interventions & coaching
Signal Complete
Pro + at-home clinical labs, body-comp kit, and genomic biological age.
- Everything in Pro
- At-home labs + body-composition kit
- Genomic biological age
- Priority coaching
Annual billing shown. All tiers: your data exports as FHIR; cancel anytime.