Choose Tractive if you want to keep your dog's existing collar and know the plan price before you buy — Tractive publishes its rates, and three years on Basic works out at $252. Choose Fi if you want the best-integrated collar on the market and the longest battery claim in cellular pet tracking, and you are comfortable with a membership whose price you confirm at checkout. Both are good hardware. The deciding factor for most buyers is not the hardware.
Axis 1: hardware shape — a real difference
Tractive is a module that clips onto whatever collar the dog already wears. Fi is the collar: the electronics live in the strap. Fi's approach looks better and nothing dangles; Tractive's means you keep the collar the dog is used to, and you can move the tracker to a different collar or a different dog in seconds. If you have strong feelings about your dog's collar, this axis settles the page on its own.
Axis 2: battery — Fi
Fi states the longest battery life in cellular pet tracking, and that is the single clearest hardware advantage on this page. Tractive needs charging every few days. On a dog you see daily that is an annoyance; on a working or outdoor dog it is the kind of annoyance that ends with a flat collar on the day it matters.
Axis 3: escape detection — Fi, cleverly
Fi ties escape detection to your home Wi-Fi: the collar knows it has left the house because it dropped off the network, which is closer to how owners actually think than drawing a polygon on a map. Tractive uses a virtual fence, which works and is the industry standard. Both alert; Fi's mechanism needs less setting up.
Axis 4: plan transparency — Tractive, decisively
Tractive publishes its plan prices on its own site: Basic at $9 a month on a one-year term and $6 a month on a two-year term, which is how we arrive at $252 for three years on the cheapest honest route. Fi states on its own Amazon listing that a membership is required and we are not printing a figure we cannot cite.
This matters more than it sounds. The plan is the larger half of the three-year cost of any cellular pet tracker, so a brand that publishes it is letting you do the arithmetic before you commit, and a brand that does not is asking you to find out later. Every pet plan costed over three years.
Axis 5: platform risk — Tractive, and this is the uncomfortable one
A cellular collar is only as durable as the company running the servers. Two data points we checked ourselves: whistle.com now returns a 301 redirect to tractive.com, and tryfi.com returns a 301 to fitracking.com. The first means Tractive absorbed a major competitor. The second means Fi has changed its domain, which is a rebrand rather than a failure — but it is exactly the kind of thing worth knowing before you sign up for three years of payments on hardware that is useless without the platform.
The short answer
Quick picks
Ranked by what each one costs to own for three years, not by sticker price. The plan column is the one most comparisons leave out.
| # | Product | Best for | Plan / 3 yr | Price |
|---|
| 01 | Tractive Smart Dog GPS trackerClips to any collar, publishes its plan rates on its own site, and is the platform most likely to still exist in three years. $252 across three years on Basic. | Keeping the collar your dog has | Plan required +$252 / 3 yr | $47.40·Amazon |
| 02 | Fi Series 3+ GPS dog collarThe tracker is the collar, the battery claim is the longest in cellular pet tracking, and escape detection uses your home Wi-Fi. Membership required, and the brand has just moved domains. | The best-integrated collar | Plan required Plan required | $129.00·Amazon |
| 03 | eMACROS dog GPS tracker, no subscriptionRadio rather than cellular, so no SIM and no subscription at all. Works in dead zones where both of these go silent, and only while you are out there with the handheld. | Neither: the no-fee answer | No monthly fee $0 | $139.99·Amazon |
| 04 | | If the dog barely roams | No monthly fee $0 | $6.98·Amazon |
#ad · Live prices from Amazon's product API, as of October 11, 2026. Where we have no verified live price we show none — a gap beats a number that has rotted. Plan figures are the brands' own published rates, cited in Sources below.
In detail
The picks, in full
Top pickPlan required#01 · Tractive
Tractive Smart Dog GPS tracker
Keeping the collar your dog has
Clips to any collar, publishes its plan rates on its own site, and is the platform most likely to still exist in three years. $252 across three years on Basic.
The subscription reality
The collar is useless without a plan — the subscription pays for the SIM inside it. The cheapest honest route to three years on Basic is $252.
- Published monthly:
- $9 Basic (1-year), $6 Basic (2-year)
- Over three years:
- $252 on Basic (a 2-year term at $144 plus a 1-year at $108)
Specs, as published by Tractive
- ·Clips to any collar, cellular with built-in SIM
- ·Virtual fence alerts
- ·Live tracking with a walk-to-it mode
Good
- +The best-supported pet GPS on the market, and the one most likely to still exist in three years
- +Genuinely live tracking, which is what you need for a dog that runs
- +Virtual fence alerts actually work
Not so good
- −Needs a plan. $252 over three years on Basic is the realistic figure, and that is before the collar
- −Charge every few days
- −The plan is per tracker, so two dogs is two plans
Skip it if
your dog never leaves a fenced garden. For that dog a $25 Bluetooth tag and a sturdy latch is the better purchase.
Plan required#02 · Fi
Fi Series 3+ GPS dog collar
The best-integrated collar
The tracker is the collar, the battery claim is the longest in cellular pet tracking, and escape detection uses your home Wi-Fi. Membership required, and the brand has just moved domains.
The subscription reality
Fi states on its own Amazon listing that a membership is required. Fi's own site now lives at fitracking.com — tryfi.com 301-redirects there, which is worth knowing before you commit three years of payments to a brand.
Specs, as published by Fi
- ·The tracker is the collar, not a clip-on
- ·Long stated battery life for a cellular pet tracker
- ·Escape detection tied to your home Wi-Fi
Good
- +Best-looking and best-integrated pet collar here — no dangling module
- +Battery life is the longest claim in cellular pet tracking
- +Escape detection via home Wi-Fi is clever and works the way owners actually think
Not so good
- −Membership required, stated on Fi's own listing
- −tryfi.com now 301-redirects to fitracking.com — a rebrand to check before a three-year commitment
- −Expensive collar on top of the membership
Skip it if
you want to keep your dog's existing collar. With Fi, the collar is the product.
No monthly fee#03 · eMACROS
eMACROS dog GPS tracker, no subscription
Neither: the no-fee answer
Radio rather than cellular, so no SIM and no subscription at all. Works in dead zones where both of these go silent, and only while you are out there with the handheld.
The subscription reality
Radio direction-finding, not cellular. No SIM, no network, no plan — which is exactly why it still works where there is no signal.
- Over three years:
- $0
Specs, as published by eMACROS
- ·Radio link between a handheld and the collar unit — no SIM, no cellular
- ·Manufacturer states up to 3 miles of range
- ·Works off-grid where there is no phone signal
Good
- +No subscription, ever, because there is no network involved
- +Works in dead zones, which is precisely where cellular pet trackers fail
- +No app, no account, no servers that can be switched off
Not so good
- −You carry a handheld — there is no phone app and no map you can check from work
- −Range is line-of-sight; hills and trees cut it hard
- −Stated 3 miles is a best case, as every radio range figure is
Skip it if
you want to check on the dog from your desk. Radio direction-finding only works when you are out there holding the handheld.
No monthly fee#04 · GOCII
Waterproof AirTag dog collar holder (2-pack)
If the dog barely roams
Before paying either membership, ask whether a $7 holder and a $24 tag covers the actual risk. For a dog that stays in a fenced yard, it often does.
The subscription reality
No subscription, now or later. The purchase price is the whole cost of ownership.
- Over three years:
- $0
Specs, as published by GOCII
- ·Waterproof silicone case
- ·Threads onto a collar strap
- ·Two per pack
Good
- +Cheap
- +Survives a wet dog
- +Keeps the tag flat against the collar
Not so good
- −An AirTag on a collar is still only a finder, not a tracker
- −Can be chewed off
- −Adds a little weight
Skip it if
your dog roams out of sight. No holder turns a Bluetooth tag into a GPS collar — you need cellular or radio for that.
The recommendation
A dog that genuinely roams and an owner who wants no surprises: Tractive. Published plan prices, the largest installed base, and the module moves between collars.
A dog that escapes from home specifically: Fi. The Wi-Fi escape detection is the right mechanism for that exact problem, and the battery means it is still charged when it happens.
A dog that works ground with no cell coverage: neither. Both are cellular, so both go silent in a dead zone, and no plan tier fixes that. Radio systems are the answer there, and they have no subscription at all.
A dog in a fenced yard that got out once: neither. A tag in a waterproof collar holder costs about thirty dollars all in and has no renewal date. That comparison is worth reading first.
What three years actually costs
On Tractive the arithmetic is public: $252 of Basic plan over thirty-six months, plus the tracker, plus a replacement collar clip if the dog loses one. On Fi, the collar is a substantial purchase and the membership is an additional recurring cost you should confirm in writing before buying. In both cases the device is the small number — which is the pattern this entire site exists to point out.
Two dogs changes the answer
Plans are per tracker on both platforms, so two dogs is two subscriptions and the three-year figure doubles. At that point a one-off radio system that handles several dogs from a single handheld stops looking expensive and starts looking like arithmetic. The no-fee dog options are worth pricing against two plans before you commit to either brand here.
How we picked
We did not lab-test these trackers
Everyone in this category claims to have tested twenty devices. We have not tested any of them, and we say so on every page. What we did instead: read each manufacturer's published specifications and cite them with the date, find the actual subscription price and cite that too, and work out what thirty-six months of ownership costs at those published figures. Device prices come live from Amazon's API and expire after 48 hours rather than going stale. Where a figure could not be sourced to the manufacturer, the page says the spec is unconfirmed rather than borrowing it from a competitor's review. The full method is on the methodology page.
Working out what a tracker really costs? See the three-year cost of every tracker, compared.
Read next
Related
The table behind every recommendation on this site: device, plan, and what thirty-six months actually comes to.
The full ranking, with the three-year cost of every plan shown.
The single-product look at the platform, including what the plan buys.
What you give up to avoid a membership entirely.
Why both of these have a fee, in one paragraph about radios.
Four questions that eliminate most of the market before you look at a single specification.
