The longevity score

A transparent model of canine longevity signals.

A glass-box score built from breed, body condition, and the walks you already log, plus bloodwork once your vet reviews a real blood panel. Always shown as a range, never a single date.

Download on the App StoreSee the four components

Free to play. The Estimate unlocks the moment you add your dog. Educational and non-diagnostic.

The Tailmates longevity screen: a longevity-score dial, the model's own standing, and a modeled remaining-life range.
How the score works

Four rules govern every number

Estimate → Lab-verified

Three bars unlock instantly and free. Your vet reviews a real panel to unlock the fourth, and the range narrows.

Ranges, never dates

Life expectancy is always a band like 7.6–12.2 yrs. Always a range, never a single date.

Vet-in-the-loop

No lab-verified score exists until a licensed vet reviews the panel and confirms a real relationship. Your vet reads the results, the lab validates the data, and the analysis is Tailmates'.

Glass-box

Every bar shows its top drivers. The vet can audit it, and you can read it. Every number is open to inspection.

The four components

Four bars you can read at a glance

Three you unlock instantly, one your vet unlocks. Tap into any component for the full story: what it means, why it matters, and the levers you can move.

longevity estimate

On Track
Genetics72
Body condition86
Activity64
BloodworkUnlock with your vet

Illustrative. Bloodwork stays locked until your vet reviews the panel.

Genetics

The fixed baseline. Not your fault

Breed, size, age and neuter status read against actuarial life tables set the curve your dog started with. It's the one bar you can't change.

Learn more about Genetics

Body Condition

A well-studied body-condition signal

How lean or heavy your dog is for their frame, scored the way a vet reads body condition. Lean dogs tend to live meaningfully longer.

Learn more about Body Condition

Activity

A daily movement signal you can track

The steady daily movement built from the walks you log. It keeps muscle, joints, heart and mind in shape, and slows frailty with age.

Learn more about Activity

Bloodwork

Vet-unlocked

Your dog's inside story. Reviewed by your vet

A snapshot of how the organs are doing on the inside, decomposed into seven clinical dimensions. Locked until your vet reviews a real panel.

Learn more about Bloodwork

Informational wellness guidance, not a diagnosis. Talk with your vet about what’s right for your dog.

What the score gives you

Four model outputs, with their limits visible

Not a wall of analytes. The things you actually care about, with a licensed vet’s review and lab-validated data behind the Lab-verified sample.

Longevity scoreLab verified
82/ 100Longevity scoreGreat

Model standing: 72 out of 100

Where our model places them. Not a ranking against other dogs.

Modeled remaining-life range7.6–12.2 yrs

An unvalidated model interval, never a death date or healthspan claim.

Bio-age 0.8 yr younger96% complete

Signals to discuss with your vet

The rule set can identify signals to discuss with a veterinarian; it does not estimate the causal effect of changing them.

82 · Great

Longevity score

The 0–100 headline: a typical dog reads about 70. The model's own standing, like 72 out of 100, always shows beside it. That is where our model places your dog, not a ranking against other dogs.

7.6–12.2 yrs

Life-expectancy range

The estimate as a band: always a range, never a date. A lab-verified panel tightens the band, because lab-validated data is worth more than an estimate.

−0.8 yr

Bio-age delta

The same modelled estimate in friendlier units: where the model places your dog against their calendar age, size-adjusted. Negative reads younger. It is not a measurement of your dog's biology.

% complete

Data completeness

More markers, tighter range. Below a minimum we refuse a headline rather than guess. We show how much of the picture we have, and we say plainly what we had to assume.

Estimate → Lab-verified

Free the moment you start. Lab-verified when your vet reviews the panel.

longevity estimate

Free · instant

Three bars the moment you add your dog: Genetics, Body Condition, Activity. No needles, no paywall. Bloodwork shows locked and the range is wider, honestly so.

Lab-verified score

Lab-validated data

Add a real panel. A licensed vet reviews it, attests the results match the source lab report, and confirms the relationship. The fourth Bloodwork bar unlocks, the range narrows, and Tailmates computes the full analysis.

See how vets review bloodwork

What you’ll see in the app

One real screen, no mockup. The dial, the range, and the levers you can still move. Demo data shown.

88 out of 100, in the Thriving band
The levers you can still move, led by the daily walks
A Tailmates lab-verified longevity score of 88 in the Thriving band, with an 8 to 11 year modeled remaining-life range and the levers to review
8 to 11 years. Always a range, never a date
  1. 88 out of 100, in the Thriving band
  2. 8 to 11 years. Always a range, never a date
  3. The levers you can still move, led by the daily walks
Lab-verified · after your vet reviews the panel

Before your vet reviews the panel, the same screen shows three bars and a wider range. Everything else stays put.

The research

A glass box, and an open question

Every input and every weight behind this score is written down, and our ledger marks which values are our own assumptions rather than published sources, so you can take the whole thing apart. What has not happened is the test: no dog has been followed to an outcome, so the number has never been checked against how long dogs actually lived. Running that test is the work the company is doing, and we publish the method before we publish a result.

What we are studyingRead the full medical disclaimerHow vets partner with us

Please read

The short version: Tailmates is a wellness and fitness product, not a medical device and not a veterinary provider. Our longevity estimate is educational and non-diagnostic. It is expressed as a range, never a single date, and it does not diagnose, treat, cure, or prevent any disease. It is not a substitute for examination, diagnosis, or treatment by a licensed veterinarian.

If your dog is unwell, contact a veterinarian or an emergency clinic. Do not wait on, or rely on, an app score.

Questions, answered

Straight answers about the score

Is the longevity score a medical test or a diagnosis?
No. It's an educational wellness estimate, not a medical device and not a diagnosis: it never detects or screens for disease, and it's not a reason to start, stop, or change any treatment. Only your veterinarian can diagnose your dog and interpret results for them.
Why a range instead of a number of years?
Because lifespan is genuinely uncertain, and a false-precision date would be both wrong and cruel. We show a model-derived remaining-life band, like 7.6–12.2 years, never a death date, healthspan label, or promise that a habit will add a quantified number of years.
How much should I trust it?
Less than you would trust a test, more than you would trust a guess: we do not yet have a prospective accuracy estimate. Published life tables and veterinary studies inform the rule set, but Tailmates’ curve shape, weights, interval width, model standing, and biological-age transform have not been fitted or calibrated against Tailmates outcomes, so it is an inspectable pre-validation model, not an epigenetic clock or death-date predictor. The full version of this answer, including what would make us stop, is on the science page.
What makes a score “Lab-verified”?
A licensed veterinarian reviews the panel, attests the blood values match the source lab report, corrects the extraction, and confirms an established veterinarian-client-patient relationship. Your vet reviews the panel; the lab validates the data; Tailmates computes the longevity analysis. Without that review, a lab-verified score cannot exist, no exceptions.
Does Tailmates sell supplements?
No. We don't sell supplements, treatments, or cures. Tailmates' fee covers the longevity analysis only, and your vet stays in the loop for the medicine, billing you for the visit, draw, and lab at their own rates.

See the model, inputs, and limits.

Start your dog’s longevity estimate

Free to play. The Estimate unlocks the moment you add your dog. Review it with your vet whenever you’re ready.

Download on the App StoreNot on iPhone? Get it on Google Play