Fi vs. Life360 Pet GPS
Fi Mini compared with the Life360 Pet GPS. Life360 figures checked 2026-09-24 against Life360’s published specifications.
The short answer
Life360 Pet GPS is a pet add-on to a family location-sharing app; Fi Mini is a GPS and health tracker built for dogs and cats. On the published figures Fi Mini is under half the weight — 16 g (0.56 oz) against 33.7 g (1.19 oz) with its collar attachment — about half as thick, and runs up to 2 months between charges against about 3 to 5 days in Life360’s Beast Mode. Fi’s membership includes unlimited safe zones and sleep and health tracking like drinking, eating, scratching, licking and barking, while Life360 Silver is limited to 5 places and only logs distance.
Specifications side by side
Every figure below comes from the manufacturer’s own published specifications.
| Specification | Fi Mini | Life360 Pet GPS |
|---|---|---|
| Product type | GPS tracker and health monitor | GPS pet tracker inside the Life360 family location-sharing app |
| Device weight | 16 g (0.56 oz) | 33.7 g (1.19 oz) with its collar attachment |
| Dimensions | 42 × 30 × 12.5 mm (1.65 × 1.18 × 0.49 in) | 51.0 × 36.6 × 23.9 mm (2.01 × 1.44 × 0.94 in) with its collar attachment |
| Thickness on the collar | 12.5 mm (0.49 in) | 23.9 mm (0.94 in) |
| Battery life | Up to 2 months | About 3–5 days in Beast Mode |
| After the battery dies | Not Available | Reserve Mode below 6% charge — Bluetooth only, up to 6 months, with occasional location updates when a phone running Life360 passes nearby |
| Water resistance | IP68, salt-water tested | IP68 — water resistant to 1.5 m (5 ft) |
| Connectivity | GPS and LTE-M cellular, with Wi-Fi and Bluetooth at home | GPS, LTE-M cellular, Wi-Fi and Bluetooth Long Range |
| Coverage | North America and much of Europe — 35 countries and territories | About 40 countries where Life360 ships hardware to |
| Safe zones | Unlimited geofences with 24/7 escape alerts | 5 places with alerts on Silver, the plan bundled with Pet GPS |
| Health and behaviour | Activity, sleep, barking, scratching, licking, eating and drinking detection; AI vet records | Distance travelled and Zoomies alerts |
| Lost-pet network | Lost Dog Mode and Search Party for dogs — friends, family and nearby Fi members | Pet Finder Network — a Lost Pet Alert to Life360 members within 3 miles (about 5 km) |
| Indicator light | Indicator light | Indicator light |
| Subscription | Required — $99 for the first year, then $189 a year | Required — Silver membership, $99.99 a year after the first |
| Cost, first year | $198 — $99 device plus $99 first-year membership | $99 — device with 12 months of Silver included, for new and free Life360 members |
| Try before committing | 30-day risk-free trial | 30-day money-back guarantee |
| Fits existing collar | Attaches to any collar or harness | Clips onto collars up to 1 in (25 mm) wide |
Where Fi is stronger
Under half the weight
16 g (0.56 oz) for Fi Mini against 33.7 g (1.19 oz) for Life360 Pet GPS with its collar attachment — the only weight Life360 publishes.
Half as thick, about a third of the volume
Fi Mini stands 12.5 mm (0.49 in) off the collar against 23.9 mm (0.94 in), and at 42 × 30 × 12.5 mm against 51.0 × 36.6 × 23.9 mm it takes up roughly a third of the space.
Months between charges, not weeks
Up to 2 months on Fi Mini against about 3–5 days in Life360’s Beast Mode, the setting it recommends for escape-prone pets — and a tracker is only useful if it is charged on the day the pet gets out.
Unlimited safe zones on every membership
Home, the walker’s, daycare and a relative’s house all covered with 24/7 escape alerts. Life360’s Silver plan, the one bundled with Pet GPS, covers 5 places.
Health and behaviour monitoring
Activity, sleep, barking, scratching, licking, eating and drinking detection with AI vet records. Life360 publishes distance travelled and Zoomies alerts.
Fits whatever the pet already wears
Fi Mini attaches to any collar or harness, including a cat’s breakaway collar. Life360 Pet GPS clips onto collars up to 1 in (25 mm) wide.
Tested in salt water
Both are IP68. Fi Mini is additionally salt-water tested; Life360 rates Pet GPS to 1.5 m (5 ft).
Common questions
- Which is smaller and lighter, Fi Mini or Life360 Pet GPS?
- Fi Mini, by a wide margin. It weighs 16 g (0.56 oz) and measures 42 × 30 × 12.5 mm (1.65 × 1.18 × 0.49 in). Life360 Pet GPS is 33.7 g (1.19 oz) and 51.0 × 36.6 × 23.9 mm (2.01 × 1.44 × 0.94 in) with its collar attachment — roughly twice the weight, twice the thickness and three times the volume.
- Which has the better battery life?
- Fi Mini, on published figures: up to 2 months between charges against about 3–5 days for Life360 Pet GPS in Beast Mode, the setting Life360 recommends for escape-prone pets.
- What happens when the battery runs out?
- Life360 Pet GPS drops into Reserve Mode below 6% charge, which keeps it findable over Bluetooth for up to 6 months — but only with occasional updates when a phone running Life360 passes nearby, so it behaves like a Bluetooth tag rather than a live GPS tracker until it is charged. Fi Mini has no reserve mode; it relies on lasting up to 2 months so that running flat is rare.
- Is Life360 Pet GPS cheaper than Fi?
- Yes. Life360 Pet GPS is $99 for the first year with the device and 12 months of Silver membership included, then $99.99 a year. Fi Mini is $198 for the first year — $99 for the device plus $99 for the first year of membership — then $189 a year. Fi’s price includes unlimited safe zones, sleep and behaviour tracking and a battery that lasts months rather than weeks.
- How many safe zones do you get?
- Unlimited on every Fi membership, with 24/7 escape alerts. Life360’s Silver plan, which is the one bundled with Pet GPS, covers 5 places.
- Does either one track health?
- Fi does: activity, sleep, barking, scratching, licking, eating and drinking detection, plus AI vet records. Life360 Pet GPS publishes distance travelled and Zoomies alerts.
- Does Fi work outside the United States?
- Yes — Fi Mini works across North America and much of Europe, 35 countries and territories. Life360’s help centre lists about 40 countries it ships hardware to.
- Which is better for a cat or a small dog?
- Fi Mini, at 16 g (0.56 oz) and 12.5 mm (0.49 in) thick, and it attaches to any collar or harness, including a breakaway cat collar. Life360 Pet GPS is 33.7 g (1.19 oz) with its attachment, stands 23.9 mm (0.94 in) off the collar, and clips onto collars up to 1 in (25 mm) wide.
What Fi owners say
Worth every single penny I paid for them and then some!
Tommy’s Dog Dad
I’ve had every version of the Fi collar, and it just keeps getting better!
Lola’s Dog Mom
We’re loyal to him because he’s loyal to us and he’s a part of our family… there’s no other better technology available.
Poppy’s Dog Dad
Ready to choose?
Every Fi membership includes a 30-day risk-free trial.