Now on iPhone and Android · Free

Walk more.
Know more. Together.

Join, walk, invite your friends, and earn points together. See your dog’s real-time longevity score and improve it with daily action.

Download on theApp StoreGet it onGoogle Play

Built by a company working to radically extend canine lifespan. See what we are studying

Tailmates walk-complete screen: 1.84 miles and 41 minutes logged, points earned and a streak kept
The research

Your question is bigger.

Dogs get about a decade, and we are building the science that gives them more. The app is the daily habit, and the research is the reason. Sharing is opt-in and always your call.

What we are studyingWhy we exist
The daily loop

One daily habit, for major benefits

Add your dog from a photo, earn points on every walk, and let your pack pull you out the door. Your longevity estimate moves with you.

  1. Read from one photo
    Tailmates add-your-dog screen: an instant health read from Bella's photo with a just-right body condition
    You confirm it
    1. Read from one photo
    2. You confirm it
    1

    Add

    Add one photo of your dog and Tailmates estimates breed, body condition, and age for you to confirm. Bella gets a confident "just right" read and a warm plain-language note, so setup takes seconds.

    Starting from a photo means a real picture from day one instead of a blank form, and you always confirm or adjust what the app suggests.

  2. 1.84 mi banked
    Tailmates walk-complete screen: 1.84 miles and 41 minutes logged with points earned
    Points banked
    1. 1.84 mi banked
    2. Points banked
    2

    Walk

    Hit start and walk your dog like you already do. Distance, time, and pace track on your phone with your Watch and widgets, then the walk earns points and keeps your streak alive.

    Riding in a car pauses tracking on its own, so the points you earn come from real walks, and the number actually means something.

  3. Walking now
    Tailmates feed: today's Tail Time prompt and packmates walking right now
    1. Walking now
    3

    Together

    Your pack shows you who is walking right now, and one tap on "I'll walk too" turns their walk into yours. Tail Time asks everyone for today's adventure, and packmates cheer your posts.

    Seeing a packmate out there and getting cheered on is the surest way to keep a walking habit alive day after day.

  4. 88 · Thriving
    Tailmates longevity screen: an 88 out of 100 score in the Thriving band with an 8 to 11 year modeled remaining-life range for Bella
    Modeled range
    1. 88 · Thriving
    2. Modeled range
    4

    Move it

    Every walk feeds an activity signal into your longevity estimate, shown as a 0 to 100 score with a modeled remaining-life range. It is an educational read, not a measure of years a walk adds.

    The biggest lever on the estimate is the daily walk itself, so the game you play this week moves the number you watch.

See exactly how it works
A look inside

The whole journey in the app

From the first photo to a longevity score you can move.

Snap a photo to get started

One clear photo and Tailmates estimates breed, body condition, and age. You confirm or adjust, and you are off.

See the whole journey
Instant health read from one photo, a confident "just right"
Tailmates add-your-dog screen: an instant health read from Bella's photo showing a just-right body condition and a confident read, with breed and birthday filled in below
Use the estimate or set it yourself, you always confirm
  1. Instant health read from one photo, a confident "just right"
  2. Use the estimate or set it yourself, you always confirm

Each walk earns points and streaks

Tap to get started and walk like normal. Your distance, time, and pace are tracked on your phone.

1.84 mi in 41 min, tracked on your phone and Watch
Tailmates walk-complete screen: 1.84 miles and 41 minutes logged, points earned and a streak kept
Points earned and your streak kept, automatically
  1. 1.84 mi in 41 min, tracked on your phone and Watch
  2. Points earned and your streak kept, automatically

Join walks in real time

Join your pack while they walk. Navigate to where they're at, or cheer them on from the couch.

"I'll walk too" turns their walk into yours, one tap
Tailmates feed: a Tail Time prompt for today's adventure, two packmates walking now with I'll-walk-too buttons, and a streak post from Bella
Tail Time, one prompt gets the whole pack outside
  1. Tail Time, one prompt gets the whole pack outside
  2. "I'll walk too" turns their walk into yours, one tap

A longevity estimate that updates in real time

Built from breed, body condition, and activity, and shown as a range, never a single date. It reads where your dog stands today, and your walks move it.

How the estimate works
88 · Thriving, a longevity estimate you can watch improve
Tailmates longevity screen for Bella: an 88 out of 100 score in the Thriving band, model standing 83 out of 100, and an 8 to 11 year modeled remaining-life range
8 to 11 year modeled remaining-life range, never a single date
  1. 88 · Thriving, a longevity estimate you can watch improve
  2. 8 to 11 year modeled remaining-life range, never a single date

Go deeper with labs

When you are ready, invite your clinic from the app and bring lab-verified bloodwork into the estimate. Your vet stays in the loop, and your free estimate stays free either way.

How vets partner with usWhat the bloodwork is for
Invite your own clinic, a name and email is all it takes
Tailmates invite-your-vet screen: a one-time invite to Riverside Veterinary with the clinic email and phone, sharing an introduction only and never a diagnosis
A warm introduction only, never a diagnosis
  1. Invite your own clinic, a name and email is all it takes
  2. A warm introduction only, never a diagnosis

Scout: your longevity sidekick

Ask anything and Scout answers from your dog's own record: walks, streaks, and the longevity score. It plans pack walks, sets reminders, and finds vets, and nothing happens until you confirm. Scout is AI and can make mistakes, so it shares educational info, not medical advice, and it never diagnoses.

More about Scout
Answers grounded in Bella's own walks and longevity score
Tailmates Scout chat in the Feed: Scout recaps Bella's streak and lab-verified longevity score, proposes a Saturday pack walk with a Create meetup card you confirm, above the mic composer and the AI disclosure line
Scout drafts the plan, nothing happens until you confirm
  1. Answers grounded in Bella's own walks and longevity score
  2. Scout drafts the plan, nothing happens until you confirm

The app is free. Plus and Silver go deeper.

Using the app, every walk, your pack, and your longevity estimate are all free. The memberships go further, and neither ever gates the basics.

The basics never go behind a paywall. Your dog’s score stays free, always.

Tailmates Silver

$25 /mo

or $249 a year

Silver is agent mode: an assistant you can ask anything, that helps you navigate the app and learn more about your dog. Everything in Plus, generous Scout credits included, and top-ups when you want more.

Scout educates, never diagnoses. Your vet stays in the loop.

Tailmates Plus

$4.99 /mo

or $39.99 a year

Tailmates+ goes deeper: analytics and health trends over time, room for the whole household, double points on every walk, and $10 off every wellness panel.

Cancel anytime. Join from inside the Tailmates app.

Get the app
The game

Climb the ranks between your friends and everyone else

Compete to be the most active in your pack, making your dog healthier while also earning points.

Tailmates global points leaderboard: a podium of the top three pups and ranked packmates below

XP, levels & quests

Every walk earns XP and climbs a real level ladder, counted honestly so it can't be faked. Daily and weekly quests keep every walk worth something.

Tailmates profile progress ring at level 9 with the Daily Walker rank

Streaks + Rainy Day Pass

Walk once a day to grow your streak. Life happens. A Rainy Day Pass freezes it across one missed day so a storm never breaks momentum.

Tailmates streak card: a growing streak with streak freezes banked

Weekly leagues

Get sorted into a ~30-pup pool, then promote or relegate every week. Always populated, so you'll never stare at an empty leaderboard.

Tailmates leaderboard podium: Sofia Kim first, Riley Chen second, Diego Santos third

'Active now' glow

When a packmate is mid-walk, their avatar lights up with the coral glow in real time. Proof someone's out there, and an invite to join.

Tailmates 'Walking now' cards: Mochi and Rocky glowing mid-walk with I'll-walk-too buttons

Packs & Tail Time

Add friends into your pack. Tail Time is a daily reciprocal prompt: post your walk to unlock everyone else's. Show up to see up.

Tailmates Tail Time prompt: start today's adventure with walk, run, hike, play, or training

Pack Walks & Local Legend

Plan real-world meetups with RSVP and QR check-in for a co-walk XP boost. Rule your dog park's segment to claim the Local Legend crown.

Badges & milestones

First walk, first mile, week warrior, centurion: unlockable badges mark the journey and give you something to chase next.

Tailmates milestone badges: First Walk, 10 Walks, 50 Walks, 100 Walks, First Mile, and Marathon Month

Anti-cheat by design

Drove instead of walked? A teleport or automotive 'walk' earns zero XP and gets flagged. The leaderboard means something.

Tailmates walk-complete header with the Verified check. Bella crushed the trail
Your longevity score

A real-time longevity score.

A longevity score broken into four categories

Play the game. Your daily walks contribute to your longevity score and update in real time. Always a range, never a single date.

Every input and every weight is written down, and our ledger marks which values are our own assumptions rather than published sources. The test itself is the work ahead.

Longevity Estimate

Free · instant

Three bars you unlock the moment you add your dog: no appointment, no needles, no paywall. Every bar shows its drivers, so nothing is a black box.

Longevity Estimate

Thriving
Genetics72
  • +Medium breed, long-lived line
  • +Neutered, steadier baseline
  • -Entering senior years
Body condition86
  • +Ideal body condition (5/9)
  • +Steady healthy weight
  • -Slight winter gain to watch
Activity64
  • +Daily walk streak alive
  • +Consistent daily miles
  • -Fewer long walks this week
BloodworkUnlock with your vet

Unlocks with a vet-reviewed blood panel.

Bloodwork unlocks seven clinical dimensions

  • D1Genetic
  • D2Body
  • D3Activity
  • D4Renal
  • D5Liver
  • D6Metabolic
  • D7Inflammatory

Your lab-verified payoff

Sample
Longevity scoreLab verified
72/ 100Longevity scoreOn Track

Model standing: 54 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 younger72% complete

Illustrative numbers. Your dog’s range narrows and a bio-age you can track appears only after a real blood panel is lab verified, with your vet in the loop.

Tailmates does not diagnose, treat, or prevent disease, and does not sell supplements or promise outcomes. The Longevity Estimate is an educational wellness signal. The lab-verified score is generated only after the lab confirms the blood values within an established veterinarian-client-patient relationship, with your vet in the loop.

Go deep on the longevity scoreThe science, honestlyRead the medical disclaimer
For veterinarians

A worklist that finds the dogs aging too fast

Owners arrive already walking and already engaged in their dog’s healthspan. You provide the clinical read of the bloodwork, and Tailmates computes the analysis. Biomarker trends and bio-age deltas surface the patients drifting the wrong way, so a recheck happens months earlier.

See how vets partner

Accelerated-Aging worklist

3 need review
  • M

    Maple

    Golden Retriever

    bio-age +1.4 yr
  • C

    Cooper

    Boxer

    bio-age +0.9 yr
  • O

    Olive

    Beagle

    bio-age −0.3 yr

Illustrative. Real data is scoped to your linked patients.

Start a streak worth keeping.

Get your pack moving

Free to play. No consumer paywall, ever. Get it on your phone and take the first walk today.

Download on theApp StoreGet it onGoogle Play