GPS Tracking for Multiple Dogs: Fi vs Tractive vs Halo

All three brands let you manage several dogs from a single account and a single app. None of them lets one device track two dogs at once, because a GPS tracker reports the location of whatever it is attached to. In practice that means every dog needs its own collar or tracker, and in most cases its own paid plan or plan slot. Where the brands differ is in how they bill the extra dogs, whether they discount them, and how many family members can see the whole pack. Those differences add up quickly: over two or three years, the plan cost for a second and third dog usually matters more than the hardware price.

Fi's membership page says you can keep tabs on multiple dogs within a single account and add unlimited users, so everyone in the household can see every dog. Each dog still wears its own Fi collar, and each collar carries its own Fi Membership. Fi's help center describes a multi-dog discount of 5% off the membership price for members with two or more Fi Memberships, excluding newly upgraded Series 3 memberships, and says the one-time $20 activation fee is waived on qualifying new Series 3 collar orders when the multi-dog discount applies. Fi now sells the collar bundled with a membership term. Recent 2026 pricing reports list roughly $99 for six months, $189 for twelve months, and $339 for twenty-four months, plus the $20 activation fee, so confirm the current figures at checkout before you budget for a second or third dog.

For multi-dog homes, the Fi Series 3+ has two practical advantages. Fi advertises up to three months of battery life, which means fewer collars to rotate onto chargers, and each collar learns its own dog's activity, sleep, and behavior patterns. Fi says the Series 3+ detects steps, sleep, barking, licking, scratching, eating, and drinking, which makes it easy to spot when one dog's routine drifts away from the others. For a deeper look at charging habits, see our Fi Series 3+ battery and charging guide.

Tractive's help center is explicit: each GPS tracker must be activated with its own subscription plan, and you cannot link more than one tracker to the same plan. Tractive compares it to a mobile phone line, because every tracker uses cellular service. You can, however, add every tracker to one Tractive account and manage all of them from the same app. Tractive's plan page lists Family Sharing as a Premium feature, along with activity and sleep monitoring, heart and respiratory rate monitoring on supported trackers, worldwide coverage, and 365-day location history.

At the time of writing, Tractive's US plan page listed Basic at about $9 per month on a one-year plan or $6 per month on a two-year plan, and Premium at about $10 per month for one year, $7 per month for two years, or $5 per month on a five-year plan. Tractive notes that prices vary by location. For two dogs on Premium, multiply the plan you choose by two. There is no shared plan for several trackers, so the lower hardware price is where Tractive usually saves money in a multi-dog household. If you are comparing the two brands head to head, our Tractive vs Fi comparison covers range, accuracy, and battery in more detail.

Halo is a different kind of product. It is a GPS collar built around virtual fences and training feedback, not only a locator, and its hardware costs considerably more than Fi or Tractive. Halo's help center says each dog needs its own Halo Collar, but all collars can be managed under one membership plan and one app account as a pack. Halo offers Bronze, Silver, and Gold membership tiers with monthly, annual, or two-year billing. Its plans page says annual billing includes a free month, and additional collars are added to the same membership. Halo's multi-dog discount is applied automatically when you add more than one collar kit to your cart and covers up to five collars. Third-party reviews in 2026 list Bronze at $9.99, Silver at $14.99, and Gold at $19.99 per month, but Halo does not publish per-collar pricing for additional dogs on its public plans page, so check the price in the app before adding a dog. SmartPaws does not currently list the Halo Collar in its product catalog.

Owners of several dogs often want to know more than where everyone is. They also want to know whether each dog is keeping its normal routine. This is where per-dog profiles matter. Fi and Tractive both keep separate activity and sleep histories for each dog on the account, so you can see whether your older dog is walking less than usual while the younger one is unchanged. Tractive says its health features learn each pet's baseline after the tracker has been worn for about a week, and its longer-term health alerts need the tracker worn at least 12 hours a day, including overnight, for six weeks or more.

Because these baselines are learned per pet, avoid swapping trackers between dogs. Moving a collar from one dog to another mixes two sets of data and can make trends and alerts meaningless. Label each device in the app with the dog's name, set up safe zones for each dog, and check notification settings so that an escape alert tells you which dog left the yard. If one of your dogs is a senior, our guide to senior dog weight loss tracking explains what activity data can and cannot tell you about health changes.