Built in public — iOS beta soon

This is Lulu.

She's a twelve-pound toy Aussie. Last summer she shattered her leg chasing a chicken. Specialized orthopedic surgery. Pins and supports that are still in her today. A long, quiet comeback — and no way to know, day to day, if her stride was evening out.

We built BarkPace so we'd actually know when she's back to herself. And so she performs at her best, every run.

Get early access
Free during beta. iOS 17+. Works with any Apple Watch Series 4 or later.
images/lulu-hero.jpg
Lulu, outdoor, portrait-ish (4:5)
Post-recovery, happy, full-body
or a tight portrait that feels editorial
Last run
1.8 mi · 22:14
Symmetry 94
Balanced
The chase

What a twelve-pound dog can do to a chicken. And what a chicken can do to a twelve-pound dog.

This is the part that makes everyone wince. It's also the part that made us stop guessing and start measuring.

The chicken got away. The leg didn't. Specialized surgery, pins and supports — still in her today.
Late June 2025
The chase.

Full sprint into a flock. One wrong landing. A twelve-pound dog with a shattered leg — the kind of break that needs a specialist, not a splint.

Summer — Fall 2025
Surgery & hardware.

Orthopedic surgery to rebuild the leg — pins and supports still in place today. Short leashed walks. Stairs banned. No way to know, day to day, if she was recovering evenly.

Spring 2026
The comeback.

Back on the trails. But her right stride was 11% shorter than her left — something you only find if you can measure it.

But it hasn't slowed her down one bit.

Twenty-two months post-surgery, Lulu still sprints first, still steals Whisky's ball, still takes the lead on trails we can barely keep up on. BarkPace keeps up. It counts the throws. It times the sprints. It celebrates the new personal bests. It's an app about measuring your dog's life — not a chart she needs to conform to.

Her favorite things, measured

A fitness tracker for the part of your dog that's actually fun.

Other apps log steps. BarkPace counts throws, tracks sprints, and remembers her best mile. Breed-smart goals. Tasteful achievements. The stuff you actually want to know about your dog's day.

Fetch · auto-detected

She chased 18 throws today.

19.4
mph · peak sprint
Throws
18
Avg throw dist
31 ft
Fetch Score
847
Daily rings

Three closed. Nine-day streak.

52m

Her goal was 45 min mixed. She did 52. Move, active, and vigorous rings all closed before lunch.

9-day streak
Personal bests

Four new PRs this month.

  • Fastest mile6:48new
  • Longest run3.4 mi
  • Biggest climb142 ftnew
  • Most throws, one session24
  • Peak sprint, all-time21.1 mphnew
Breed-smart goals

Her goal isn't anyone else's.

BarkPace builds a daily target for this dog — breed, age, weight, injury history, the heat outside, how hard she went yesterday. No static step count. No one-size-fits-all rings.

Whisky and Lulu live in the same house and get two different plans, every single day.

Lulu's goal today
= toy Aussie baseline (45 min mixed)
+ post-fracture adjust (−0 min, steady)
+ 82°F heat adjust (−5 min)
+ yesterday's load (light, no offset)
= 40 min mixed, light trot priority

Unlocked this season.

12 of 40
Fastest Mile
New Peak Sprint
Dawn Patrol
First Trail
30-Day Streak
Century Club
10-Throw Session
What it tracks

Four things we wished we had for Lulu.

Gait symmetry

Left-right balance, measured every stride.

The accelerometer on the Watch catches what the eye can't. A symmetry score from 0 to 100, tracked across every run, so you know when she's actually back — not just when she looks like it.

94/100
Last month — 11% asymmetric
Today — within 3% of her baseline. Her stride is back. The data said so before she did.
Route + elevation

Every trail, every loop.

GPS from the Watch records the full path, with elevation. Replay it on a map later. Spot where she slowed, where she sprinted.

1.8 mi
Distance
22:14
Duration
+84 ft
Climb
Pace over time

How she actually ran.

Pace curve across each mile. Smoothed, honest, and easy to scan at a glance.

12:20
Avg pace /mi
9:14
Fastest mile
For every dog

Not just for the ones healing.

Every dog has a normal — a pace, a stride, a weekly mileage. Knowing what that baseline is means you notice when it changes. Whether you're chasing a personal best, checking on the dog walker, or catching the first quiet signal that something's off.

How it reads your dog

Real gait metrics.
Real explanations.
No activity rings.

Other trackers hand you a number. BarkPace hands you a story. Every session is run through the same gait measurements veterinary biomechanists use — then turned into something a dog owner can actually use on a Tuesday morning.

The science is boring. The story isn't.

Underneath: accelerometer signal at fifty cycles a second, stride segmentation, spectral analysis, autocorrelation symmetry, head-bob asymmetry. The stuff in Fischer 2013 and Keegan 2001. Research-grade metrics pulled from a Watch on her collar.

On top: a weekly narrative that reads like something a friend who happens to be a vet would email you. Grounded in her actual data, referenced to specific sessions. Nothing hallucinated, nothing hyped.

Gait Symmetry
Head-bob asymmetry
Stride Balance
Spectral 1× / 2×
Regularity
Stride-to-stride CV
Cadence
Breed-size adjusted
Recovery
Pre / post exertion delta
Fatigue
Within-session sprint decay
Lulu · Week of April 13
Three runs, 5.2 miles. Her leg is doing what it should.

Lulu covered 5.2 miles across three sessions this week. Wednesday's lakefront loop was her longest at 2.1 miles session · Apr 15; Saturday's neighborhood walk was more of a saunter.

Her gait symmetry held at 0.93 through the week, right at her April baseline and noticeably better than the 0.87 she was running at in February trend · 90 days. Post-run drop stayed in her normal 5–6% range — no delayed soreness flagging.

Going into next week: she's due for her first 2+ mile trail run of the month. If symmetry drops more than 8% after a hill day, it's worth a mention at her June check. The good news: this is now five straight weeks holding baseline symmetry post-exercise.

Generated in 14s from 47 sessions
Built for your vet

A one-tap handoff your vet will actually read.

Before Lulu's next appointment, tap "Prep for Visit." BarkPace takes ninety days of her sessions, the recovery curve for toy breeds her age, and what you're worried about — and turns it into a four-page document your vet can scan in thirty seconds.

Every claim links back to the exact session it came from. No opinions. No diagnosis. Just the kind of objective data a vet can spend the appointment actually working with, instead of gathering.

For vets who live in Claude Desktop, BarkPace can pull patient data directly into the exam room — an owner-controlled, one-click connection. No accounts to manage, no separate login.

VET PREP · April 22 appt

Lulu — 3yr Toy Aussie · 9mo post-fracture

Symmetry trend over 90 days shows steady improvement from 0.84 (Feb) to 0.94 (Apr). One anomaly Apr 11 — 12-point post-run drop on a steeper-than-usual trail, resolved by Apr 12. No other deviations flagged. Stride cadence within expected range for breed size. Recovery curve is consistent with successful post-fracture trajectory per Headrick et al.
  • Is the Apr 11 post-trail asymmetry worth imaging, or is it within expected fatigue variance?
  • At 9 months post-op, should we reassess hardware at the next exam or wait to 12 months?
  • Any conditioning adjustments before introducing longer trail hikes?
images/lulu-watch-collar.jpg
Lulu with Apple Watch strapped to collar
(square crop — shot close, watch face visible)
How it works

An old Apple Watch. A dog collar. That's it.

Instead of buying another tracker with another subscription, repurpose the Watch you already replaced. Strap it on. Start a session from your phone. Get everything she did.

  1. 01
    Pair any Apple Watch — Series 4 or later. Turn off wrist detection. That's the only setup trick.
  2. 02
    Strap it to her collar. Any small-watch collar mount works. We use a $14 one from Amazon.
  3. 03
    Tap Start. The Watch records accelerometer and GPS. When you get back, BarkPace pulls it in.
Early access

Be on the list when
BarkPace ships.

We're bringing in a small group of early users first — people who run with their dogs, people coming back from a recovery, people who like looking at data. If that's you, drop your email.

No spam, no newsletter. One email when we let you in.
You're in. We'll be in touch from [email protected].