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Life360 RETP-4041 review

A cellular pet tracker with live GPS, escape alerts and a recovery network, sold with twelve months of Silver subscription and a fourteen-day battery.

What we take from it The only device in this American lot with a cellular radio, and therefore the only one that can report a position from a field. Ninety-nine dollars with twelve months of subscription included — after which it auto-renews, and that is the real price of a GPS tracker.

What you are getting

A GPS, LTE and Bluetooth tracker weighing 29 g (1 oz), with up to 14 days of battery, an IP68 rating, and a 12-month Silver subscription included. $99.

It is the only genuine tracker in this group

Five of the six American devices on this page announce “No Monthly Fee & No SIM Card” in their titles. This one requires cellular coverage and says so.

That difference is the whole shelf. A device with no cellular radio cannot send a position to you; it can only be noticed by somebody else’s phone passing within Bluetooth range. In a house that works. In a field it does not.

The subscription is the product

“12-month Life360 Silver subscription included at no extra cost… Auto-renews after 12 months. Subscription required for device use.”

Three tiers: Silver for up to 2 pets, Gold for 3–5, Platinum for 6 or more. The $99 buys the hardware and the first year; year two is a decision you will be making whether or not you planned to.

That is not a criticism of this tracker — it is how every cellular tracker works, and the shelf guidance is to add three years of subscription to the purchase price before comparing anything.

Reserve Mode, which nothing else here has

“Built-in Reserve Mode extends findability for up to 6 months after primary battery depletion.”

A flat tracker on a lost animal is the worst case, and this is the only device in the group that plans for it. Fourteen days of full tracking, then half a year of something.

The recovery network

Life360 claims 100 million members, and uses them: if the animal leaves a safe zone, the alert goes out and the community can help. That is the same architecture the Bluetooth tags on this page rely on entirely — the difference is that here it is a backup to a cellular link rather than a substitute for one.

What is not published

No update interval. Tractive, already published on this shelf, states 2–3 seconds; this says “live location tracking” without a figure. No plan price beyond the tier names, and no stated range for the Bluetooth leg.

Availability

Read on the day this page was built: $99 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-06. The live price is at the top of the page.

What we rate, and what we flag up

Strengths

  • The only device in this group with a cellular radio, so it can report from anywhere with coverage
  • Reserve Mode keeps it findable for six months after the battery dies — unique here
  • Twelve months of subscription included rather than sold separately

Compromises

  • No update interval published, where Tractive states 2–3 seconds
  • Auto-renews after a year, and the plan price is not on the page
  • Twenty-nine grams, which is a lot on a small cat

Specifications

PositioningGPS, LTE and Bluetooth
Weight29 g (1 oz)
Dimensions51 × 36 × 17 mm (2.01 × 1.42 × 0.67 in)
BatteryUp to 14 days
Reserve ModeUp to 6 months after the main battery is flat
Water ratingIP68
Subscription12 months Silver included, then auto-renews
TiersSilver up to 2 pets, Gold 3–5, Platinum 6+
RequiresCellular coverage and the Life360 app
Update intervalNot published
Amazon referenceB0H6GGW9RH
EAN0819039027786

The questions owners ask

Why does it need a subscription when the others do not?

Because it has a SIM. A cellular tracker buys airtime to send its position to you, and airtime is sold monthly. The six other devices in this group have no radio of their own: they are seen by passing phones and reported through Apple’s or Google’s network, which costs nothing because somebody else’s data carries it. The shelf guidance is to add three years of plan to the sticker price before comparing — on this one that is the honest total.

What is Reserve Mode?

A low-power state the device drops into when the main battery is spent, keeping it findable for up to six months. No other device in this group has anything equivalent. It matters because the worst moment for a tracker to go flat is the one where it is needed, and fourteen days of battery is fourteen days whatever the intention.

Is 29 g (1 oz) too heavy for a cat?

It is at the upper end. The shelf guidance is to weigh the tracker against the animal rather than the hand: 29 g (1 oz) on a labrador is nothing, on a 3.5 kg (7.7 lb) cat it is roughly one per cent of body weight hanging from the neck. The Tractive Cat Mini already published here is 25 g (0.9 oz) and specified for cats of 6.5 lb and up; this one carries no minimum animal weight at all.

Today’s price and availability, for pet devices

Details checked on October 6, 2026.

This one and its buyer, among pet devices

A dog that gets out, where a position from a field is the whole point

What buyers actually choose

Amazon reports what buyers took in the month before this page was last checked: at least 500.

The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.

Sources

Specifications: the manufacturer sheet for pet devices and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.

The way we judge these pet devices