Track · Collar Sensor
Every heartbeat
has a story.
A lightweight sensor that maps every sprint, nap, and tail-wag — heartbeat by heartbeat.
Real Pets · Real Data
A living wall of
ordinary, beautiful days.
Maya Chen
Portland, OR
"Biscuit hit 34 mph today chasing a frisbee. She's been hitting new peaks every Tuesday."
Sprint Session
James Okafor
Austin, TX
"Mochi's midnight zoomies clocked in at 2:14 AM — then 11 hours of championship napping."
Deep Sleep
Sofia Reyes
Denver, CO
"Atlas's heart rate stayed perfectly steady during his first thunderstorm. He's braver than we thought."
Resting Heart Rate
Your pet's story is already unfolding.
Start reading it today.
Priya Sharma
Chicago, IL
"Luna walks 12,400 steps a day on her tiny legs. That's the equivalent of a half-marathon."
Daily Steps
David Kim
Seattle, WA
"Track flagged a gradual slowdown in Theo's gait. Vet confirmed early arthritis — caught it early."
Activity Trend
Rachel Park
San Francisco, CA
"Nori always starts the zoomies. Wasabi follows exactly 4 seconds later. Every. Single. Time."
Synchronized Zoomies
The Sensor
Smaller than a
river stone.
18 grams. Waterproof to 50m. 7-day battery. It disappears into their coat — but the data it surfaces changes how you see every ordinary day.
Heart Rate
sampling rate
Optical pulse sensor samples every 4 seconds at rest, every second during activity. Detects stress spikes before you notice behavioral changes.
Motion & Sprint
motion capture
6-axis accelerometer maps walk, trot, run, leap, and stillness. Speed peaks, distance covered, calories burned — all automatic.
Sleep Architecture
detected
Distinguishes light doze from deep sleep from REM. Flags restlessness patterns that precede illness or pain in senior animals.
Location
accuracy
GPS + cellular triangulation. Geofence your yard and receive an amber notification the moment they wander past the boundary.
Your Pet's Day
Data that reads like
a heartbeat.
Heart Rate
Status
Normal rangeActivity Intensity · Today
Steps
8,420
today
Active time
2h 14m
moving
Sleep quality
87
/ 100
Start Tracking
Collar Your Explorer.
Free shipping. 30-day returns. No subscription required.
Track Collar Sensor
Gen 2 · 7-day battery · GPS + Heart Rate
$89
one-time
Collar Size
How to measure
Use a soft tape measure around the base of your pet's neck, where the collar normally sits. Add 2 fingers of space for comfort. That's your collar circumference.
Small / Medium (25–45 cm neck)
Cats, small dogs (Chihuahua, Dachshund, Pug), medium dogs up to 20kg
Large (45–65 cm neck)
Large dogs (Labrador, Golden Retriever, German Shepherd, Husky)
Quantity
Free shipping
US & Canada
30-day returns
No questions
2-year warranty
Covered
Works with iOS 15+ and Android 10+. No hub required — connects directly to your phone.