Tractive vs Fi (2026): Real US Prices, Battery Claims and Which GPS Dog Tracker to Buy

Last updated: November 11, 2026. We re-checked both brands on their US stores and help centers. The Tractive DOG 6 costs $79 (we had listed about $50), its cheapest US plan is $108 a year (we cited about $5 a month, and about $13 for a monthly plan the US store doesn’t sell), and its battery is rated at 14 days with Power Saving Zones and 6 without (we had only “up to 2 weeks”). Fi now charges $129 for the Series 3+ at checkout plus a plan billed at activation (we had said the collar shipped free with a $20 activation fee, which Fi’s checkout doesn’t show). We added Fi’s own battery figures by activity level, corrected the coverage claims, and replaced an unsourced lost-pet statistic.

Quick Answer: Buy the Tractive GPS DOG 6 if you want the cheapest live GPS tracking on a collar you already own: $79 plus a US plan from $108 a year or $144 for two years, so $223 for two years all in (Tractive’s US store, November 11, 2026). Buy the Fi Series 3+ if you’d rather charge rarely and your dog destroys clip-on tags: Fi rates it at up to 3 months per charge for a mostly-at-home dog, against up to 14 days for the DOG 6, but it costs $129 plus a plan from $99 for the first year, or $318 for two years. Tractive also works in far more countries.

Tractive and Fi are the two GPS dog trackers people cross-shop most. Tractive is a small clip-on tracker that goes on any collar or harness. Fi’s Series 3+ is a complete collar with the tracker built in. We compared the current Tractive GPS DOG 6 and Fi Series 3+ on price, battery, coverage and build, using each maker’s own US store, plans page and help center on November 11, 2026. We don’t test trackers ourselves: battery and coverage figures below are the makers’ claims.

Tractive vs Fi by the numbers

• $223 vs $318: two years of ownership at US list prices. That’s the $79 Tractive DOG 6 plus a $144 two-year Basic plan, against the $129 Fi Series 3+ plus Fi’s $189 first two-year term. After that, Tractive Basic renews at $144 every two years and Fi at $339.
• Up to 14 days vs up to 3 months: each maker’s best-case battery claim. Tractive’s battery table says the DOG 6 lasts up to 14 days with Power Saving Zones and up to 6 days without them. Fi’s battery guide says up to 3 months at low activity, 4 to 6 weeks at moderate activity and up to 2 weeks for a dog outdoors most of the day.
• 175+ countries vs 3: Tractive says its trackers work in more than 175 countries (worldwide use needs a Premium plan); Fi says the Series 3+ works in the US, Canada and Mexico.
• 14% of dogs were lost at least once in five years, and 93% of those were found, in an ASPCA-funded survey of US households (Weiss, Slater and Lord, Animals, 2012). A tracker shortens the search; it doesn’t replace an ID tag.

Tractive vs Fi at a glance

Tractive GPS DOG 6: Best Value and Best for Travel

Tractive is the cheaper way into live GPS tracking. The tracker costs $79, $50 less than Fi’s collar, and a two-year Basic plan is $144, so two years cost $223 in total. Because it clips on, your dog keeps whatever collar or harness it already wears, and you can move the tracker between collars. That suits a dog that needs a martingale for walks or a breakaway collar at home.

Coverage is Tractive’s other big advantage. Tractive says its trackers work in more than 175 countries through over 500 network partners, including AT&T, Verizon and T-Mobile in the US. Read the plan small print, though: Tractive’s help center says that on the Basic plan “your tracker only works in one country of your choice,” so pay for Premium if you take your dog abroad.

The trade-off is charging. Fourteen days is the best case and needs Power Saving Zones, Wi-Fi zones such as your home where the tracker stops using GPS. Without them, Tractive’s own battery table says up to 6 days, and continuous LIVE tracking during a search drains it faster still. Our Tractive review has the full plan table.

Fi Series 3+: Best Battery and Best for Escape Artists

Fi is built for the dog that doesn’t stay put. Because the tracker is part of the collar, a dog can’t pull off or chew off a dangling tag, and the long battery means it’s more likely to be charged on the day your dog slips out. Fi alerts you when your dog leaves a Safe Zone and switches to Lost Mode for faster location updates. Lost Mode cuts the battery to about two days, per Fi.

Check how you’ll pay before you order. Fi’s FAQ says “you pay for the tracker at checkout, and your membership is charged when you activate,” so the $129 collar is only the first bill. The first-term plan prices are introductory. A 1-year plan is $99 for the first year and renews at $189. That makes the second year of Fi cost more than two years of Tractive Basic. Fi’s shop also showed a 30%-off code on November 11, so check for a promotion before you pay full price.

Fi’s collar is also its limitation. You use Fi’s band or a Fi-compatible collar, and Fi’s $29 martingale band is listed only for the older Series 2. If your dog needs a martingale for walks, it wears that as a second collar (see our martingale collar guide).

Fi’s other trackers: Mini and Ultra

Fi now sells two clip-on trackers alongside the Series 3+, which closes some of the gap with Tractive:

• Fi Mini attaches to any collar or harness. Fi’s battery guide says it lasts up to 2 months; it runs on Verizon’s network.
• Fi Ultra ($299 on Fi’s store on November 11) is a clip-on tracker for the US only that uses T-Mobile LTE plus T-Satellite with Starlink, has a sound-and-vibration recall feature Fi calls CallBack (“no static electric shock,” per Fi) and charges over USB-C. Fi rates its battery at about 2 to 3 days, or up to 5 days in Power Saving Mode, far less than the Series 3+.

Our Fi collar review covers the Fi lineup in more detail.

Which should you buy?

• Buy Tractive if: you want the lowest cost over two years ($223 against $318), you travel outside North America with your dog, your dog already wears a collar or harness you like, or you’re tracking a cat (Tractive makes a dedicated cat tracker).
• Buy Fi if: your dog chews, loses or slips clip-on gear, you want to charge every few weeks instead of every week, and you’ll stay in the US, Canada or Mexico.

Whichever you buy, keep an ID tag with your phone number on the collar. A tracker with a flat battery or no signal can’t help, and a tag is how a stranger who finds your dog reaches you.

How these two fit the wider market

Tractive and Fi aren’t your only options. If monthly fees are a dealbreaker, read our guide to a GPS dog tracker with no subscription first, since both Tractive and Fi require a plan. The Whistle GO Explore, once the third big name, was discontinued in 2025 and no longer works (see our Whistle dog tracker page). On a tighter budget, our Weenect vs Tractive comparison pits two cheaper cellular trackers against each other, and if you’d rather contain your dog than track it, our Halo vs SpotOn comparison covers the two big GPS wireless fences. For the full field, start with our best GPS dog tracker roundup, or for cats the best GPS cat tracker.

The bottom line

The Tractive vs Fi choice comes down to cost and coverage against charging and build. The Tractive GPS DOG 6 costs $79 plus $108 a year or $144 for two years, works in more than 175 countries on Premium and clips onto any collar, but its battery is rated at 6 to 14 days. The Fi Series 3+ costs $129 plus a plan from $99 for the first year, works in the US, Canada and Mexico, and Fi rates its battery at up to 3 months for a mostly-at-home dog, with a collar a dog can’t chew a tag off. For most budget-minded owners, Tractive is the better buy. For an escape artist that stays in North America, Fi is worth the extra money.

Sources (checked November 11, 2026): Tractive US store and price API (DOG 6, DOG 6 XL), Tractive US plans page, Tractive battery table and help center (Basic plan coverage); Fi shop, Fi help center articles on battery life, network coverage, billing, water resistance and supported countries, and Fi’s product feed; Weiss, Slater and Lord, Animals (2012).