Methodology

This is the page that carries the most weight on the site, because it is where the thing we do instead of lab testing is made legible. If you only read one page here to decide whether to trust the rest, read this one.

1. The three-year total-cost method

The formula is deliberately trivial:

Three-year cost = device price + (published plan rate × 36) + activation fee + any mandatory accessory

Worked through on a real example. Spytec publishes its consumer plan at $14.95 a month month-to-month, or $12.95 a month paid annually. Take the annual rate, because it is the cheaper honest route:

• Device: a magnetic Spytec tracker, live Amazon price around $18
• Plan: $12.95 × 36 = $466.20
• Activation: none published
• Three-year cost: about $484

Against a Pebblebee Clip 5 at around $35 with no subscription of any kind, whose three-year cost is about $35. The cheaper-looking device costs fourteen times more to own. That is the entire reason this page exists.

Why thirty-six months

Because that is roughly how long people keep a tracker — nobody buys one annually — and because twelve months is precisely the window a bundled-service device is designed to look good inside. A tracker with a free first year and a $9 monthly plan afterwards costs nothing over twelve months and $216 over thirty-six. One of those numbers is useful.

Why we use the cheapest multi-year route

Where a brand discounts longer terms, we quote the cheapest legitimate path to thirty-six months rather than the headline monthly figure. Tractive publishes Basic at $9 a month on a one-year term and $6 a month on a two-year term; a two-year term at $144 plus a one-year term at $108 covers three years for $252, where the headline $9 rate would imply $324. We use $252. It is fairer to the brand and more useful to you.

2. The five categories of “no monthly fee”

That phrase is applied to five genuinely different funding models, and distinguishing them is most of the value this site adds. The taxonomy below is our own framing of the problem, and we will say where we found the question framed well: HotAirTag's treatment of the same subject informed how we split the categories, and crediting that costs us nothing and is the behavior we would want from a site borrowing our cost tables.

1. Bluetooth crowd-network tags. No SIM, no data, no fee, ever. Apple, Google and Samsung carry the network traffic because tags make their ecosystems stickier. Running cost is a coin cell about once a year. True no-fee.
2. Cellular with a mandatory plan. A SIM inside, a carrier being paid, and silence when you stop paying. Honest about itself, usually, and the largest category.
3. Cellular with the service prepaid. Real data costs collected as one larger payment instead of monthly. “No monthly fee” is literally true, and over three years it is frequently the cheapest way to own a cellular tracker. The question to ask is renewal cost.
4. Bring your own SIM. The device takes a standard data SIM and you supply it. Cheapest possible running cost; genuinely unsupported if anything breaks.
5. Radio direction-finding. A handheld talking straight to a collar over license-free radio. No SIM, no network, no company in the loop. Live tracking, works with zero phone signal, free forever — and only to whoever is holding the handheld.

A sixth pattern gets marketed as no-fee and is not: bundled-then-paid, where twelve months of service is included in the purchase and month thirteen is billed. We label those explicitly, because the box does not. The table that applies this taxonomy is here.

3. Where the specifications come from

Manufacturer support pages and specification pages, cited per claim with the date we read them. Every battery figure, range figure, IP rating, dimension and weight on this site traces to a Sources block at the foot of the page it appears on.

Two rules we hold to:

• We never cite a competitor for a spec. If only another review site has a figure, the page marks the spec unconfirmed rather than laundering someone else's claim into ours.
• Every citation carries an access date. Manufacturers quietly revise spec pages, so a citation without a date is unverifiable six months later.

Where a brand does not publish a figure at all, we say so. AngelSense is the clearest case: it publishes a $59 activation fee on its month-to-month plan and does not publish a monthly rate anywhere, so we print neither a guess nor a number from a third party. That the price is unobtainable is itself worth knowing before you buy.

4. Where the prices come from

Device prices come from the Amazon product API, refreshed daily, and carry the date they were checked next to every figure. Nothing is typed in by hand — the content files for this site have no price field at all, so a price cannot be authored into a page even by accident.

There is a hard freshness gate at 48 hours. If the daily refresh fails, every price on the site disappears automatically and the buttons revert to “Check price on Amazon”. Forty-eight hours rather than twenty-four so that one missed run is tolerated; the point is that the failure mode is silence rather than a number that has quietly rotted.

When you see “Check price” on this site it means one of three things: the product has no resolvable listing, Amazon currently shows no buyable offer, or our last verified price is more than two days old. In all three cases we would rather show you nothing than a figure we cannot stand behind.

Plan prices are different — they come from the brands' own pages and change rarely, so they are cited with an access date rather than refreshed automatically. If you spot one that has moved, tell us and we will fix it.

5. What we do not do

No lab measurement. No range testing, no battery endurance runs, no water-resistance checks, no drop tests. We do not have the equipment, and inventing results is the one thing that would make everything else here worthless.

No star ratings or scores. A number out of ten implies a measurement. In place of a score, every pick names the use case it suits and at least one buyer who should skip it — which is the actual information a rating stands in for.

No Review, Rating or AggregateRating structured data. The same principle applied to the machine-readable version of the page. We mark up the product and the live offer; our opinion stays as prose, where it belongs.

No invented experience. You will not find “in our testing”, “after two weeks of use” or “we measured” anywhere on this site. If you do, it is a mistake and we would like to know.

6. Update cadence

Device prices: daily, automatically, with a 48-hour expiry. Plan prices and specifications: reviewed when a brand announces a change, when a reader reports one, and on a rolling schedule so no commercial page goes a full year unread. Every page shows a “last updated” date that reflects a real content change — never a build timestamp, because this site rebuilds when prices refresh and a page claiming to be updated daily would be lying in a way you could check.

Corrections are made on the page itself with the update date changed, rather than quietly. The corrections policy is here.