Get the Fi Series 3 Smart GPS Collar if your dog bolts and there's cell coverage where you walk. It sends a live location over LTE and alerts you when your dog leaves a safe zone. It needs a Fi membership, monthly or yearly. iPhone owner in town who wants no monthly plan? An AirTag in a collar holder has no subscription, but it's a backup tag, not live GPS.
In this guide
Watch out
Don't pay for a cellular tracker if you hike where phones lose signal: it can't send you a location there.
Tracking collar types: cellular GPS, Bluetooth tag or handheld radio
The type matters more than the brand, because each one finds your dog a different way:
Cellular GPS trackers (Fi, Tractive) get a satellite fix and send it to your phone over the cell network, so they work anywhere with signal. They need a monthly plan but work on their own, with no phone nearby.
Bluetooth trackers (AirTag) have no GPS of their own. They report a location when a nearby Apple device passes, so there is no plan to pay, but updates depend on iPhones being close.
Handheld GPS radio systems, the kind hunters use, send the collar's position straight to a handheld unit by radio, so they work with no cell service. They are bulkier and built for working dogs, and none are in this roundup.
For busy towns and cities: an AirTag works as a simple backup with no subscription
For rural areas, hiking with signal, or escape-prone dogs: use cellular GPS. Bluetooth won't keep up.
Fi builds the tracker into its own collar, so it replaces the collar your dog wears now. Tractive clips onto an existing collar, which makes it easy to move between collars. An AirTag needs a holder that threads onto the collar.
A clip-on tracker is only as secure as the collar it hangs from. If your dog backs out of collars, fix the fit first, or the tracker leaves with the collar and not the dog.
Our GPS tracker picks, by situation
11.Dogs that bolt from the yard: Best for escape artists: Fi Series 3 Smart GPS Collar
Why we picked it: live GPS, escape alerts and activity tracking in a collar. Fi rates the battery at up to 3 months, which means fewer walks cut short by a dead tracker.
Live GPS tracking over LTE wherever there is cell coverage
Escape alerts tell you when your dog leaves a safe zone you set, such as your yard
Activity tracking logs daily steps
Fi rates the battery at up to 3 months; live tracking uses it faster
Fi says it is built for rain and mud (check Fi's water rating before regular swims)
The catch: It needs a Fi membership, and it replaces the collar your dog wears now. In a cell dead zone it can't send a live location until it reconnects.
What you need: The collar, plus a monthly or yearly Fi membership.
22.iPhone homes, in town: Best no-subscription pick: WhoseID Waterproof AirTag Dog Collar Holder
Why we picked it: the simplest way to track a dog if you use an iPhone. Slip an AirTag into this collar holder and your dog shows up in Apple's Find My app. No subscription, ever.
Best for: iPhone homes, in town
The catch: Bluetooth only.
Skip it if: Your home is Android-only, or your dog bolts. It relies on nearby Apple devices and has no live GPS.
33.Travel and live searches: Best for travel: Tractive DOG 6 Smart GPS Tracker
Why we picked it: a clip-on GPS tracker with a live mode that refreshes your dog's position every few seconds while you search, and coverage in many countries. It suits owners who travel with their dog.
Best for: Travel and live searches
The catch: It needs a subscription plan and cell coverage, and live mode drains the battery faster, so charge it before a hike or a trip.
Skip it if: You won't pay for a subscription. Tractive needs one. The AirTag holder doesn't, but the AirTag has no live GPS.
Big dog? Get the DOG 6 XL. Tractive makes the XL for dogs over 20 kg (44 lb) and rates its battery at up to 6 weeks with power-saving zones on. It needs a Tractive subscription too. See the Tractive DOG 6 XL pick page.
Tractive DOG 6 XL: the big-dog version, rated up to 6 weeks of battery with power-saving zones on.
Small dogs and cats: check weight before you buy
Tip
A tracker that sits fine on a Lab can feel heavy on a small dog, so check the device weight and the maker's minimum dog size before you order.
For a small dog or a cat that stays in town, a light AirTag holder is often the simplest option. On a cat, use a breakaway collar so it releases if it snags.
Slow or wrong locations: what causes them
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GPS needs a clear view of the sky. Thick tree cover, tall buildings and being indoors can delay a fix or put the dot a street away.
Weak cell signal is the other cause. The tracker knows where it is but can't tell your phone until it reconnects, so the map shows the last position it sent.
Tip
Draw the safe zone a little wider than your yard, so you get an alert when your dog actually leaves and not every time they reach the fence line.
If your dog runs off with a tracker on
Switch the app to live mode if it has one
Head to the last good position with a leash and treats, and walk, don't chase
If the dot stops moving and you can't find your dog, call local shelters too
A tracker adds to a microchip and ID tag; it doesn't replace them. Keep the chip details current. For the everyday side of owning a tracker, see our guide to GPS tracking and peace of mind.
Monthly plans: what each tracker needs
Fi Series 3 Smart GPS Collar: needs a Fi membership, monthly or annual (check Fi's site for current plans)
WhoseID Waterproof AirTag Dog Collar Holder: no subscription, ever
Tractive DOG 6 and DOG 6 XL: varies by plan length (check Tractive's site for current plans)
Over 2 years, count the subscription on the cellular trackers. The AirTag has none, which keeps it simplest over time if Find My coverage works in your area.
Yes, if your dog has ever slipped a leash or bolted, or you walk off-leash where there's signal. Even well-trained dogs can run at fireworks, thunder or wildlife. A tracker tells you where to start looking instead of guessing.
Fi vs Tractive: which GPS tracker should I get?
Pick Fi if you want the tracker built into the collar: the Series 3 is one piece, and Fi rates its battery at up to 3 months. Pick Tractive if you want to keep your dog's current collar or travel together: it clips on and, per Tractive, covers many countries. Both need a plan, so choose the one that fits how you and your dog get around. Both are in our picks above, so you can compare them side by side.
What happened to Whistle GPS trackers?
Engadget reported in July 2025 that Tractive bought Whistle, and Whistle trackers stopped working at the end of August 2025. If you had a Whistle, Tractive is the natural switch: it clips onto the collar your dog already wears. See our Tractive pick above.
Can I use an AirTag instead of a GPS tracker?
In a busy town, as a backup, yes. An AirTag reports its location through nearby Apple devices, so where there are lots of iPhones it can update often. It is not live GPS, though, and in quiet or rural areas the location can lag a long way behind your dog. For hikes or escape-prone dogs, a cellular GPS tracker (Fi, Tractive) is more reliable.
How long do GPS tracker batteries last?
It depends on the tracker and how often it checks in. Fi rates the Series 3 at up to 3 months. Tractive varies by model. AirTag runs about a year on a replaceable CR2032 coin cell. Live tracking drains any GPS tracker faster, so charge before a hike: a dead tracker can't find anyone.
Do GPS dog collars work without cell service?
Not for live tracking. A cellular collar can still get a GPS fix, but it can't send it to your phone until it reaches signal again. For places with no coverage, look at handheld GPS radio systems built for hunting dogs, which send the position from collar to handheld by radio.
Can one account track two dogs?
Each dog needs its own tracker, and usually its own plan. Check the maker's app and plan terms for multi-dog options before you buy a second one. AirTags have no plan, but each dog still needs its own tag.
Can my dog swim with a GPS tracker on?
Check the water rating for your exact model on the maker's page first, since ratings differ between devices. Rinse the tracker with fresh water after the sea or a muddy pond, and dry it fully before you charge it.
Verdict: pick by where your dog roams
The Fi Series 3 Smart GPS Collar is our top pick if you have cell coverage where your dog lives and walks. It puts live GPS, escape alerts and a battery rated up to 3 months in one collar. For iPhone owners, the WhoseID Waterproof AirTag Dog Collar Holder gives you tracking with no subscription. Tractive GPS Dog Tracker suits owners who travel with their dog.
A tracker finds your dog after they are gone; being seen helps keep them from getting lost at night. Pair it with a light-up collar from our best LED collars and reflective gear for dogs.
