Fi Mini GPS Tracker
A smaller dog who cannot carry a full smart collar — the same network and alerts in a clip-on the size of a large tag
Fi Mini GPS Dog Tracker, Collar Attachment, Membership Required
What this costs to keep using: About $15.75 a month. The hardware reports nothing without a Fi membership, which is sold separately. On Fi's prepaid tiers a year works out at roughly $15.75 a month, and that is the number to budget rather than the sticker price. Fi — Membership billing (help centre)
The variant we link: MiniOne Amazon page often holds several sizes; check the selected option before you buy.
Amazon links earn us a commission; it doesn’t change what we recommend. Researched, not tested — how we research.
Price checked November 1, 2026; the listing has today's price.
Most owners add · Everyday Harnesses
A tracker only reports where the collar is, so what it attaches to is part of the purchase.
Suits these stages
Is the Fi Mini GPS Tracker right for your dog?
- Who it’s for
- A smaller dog who cannot carry a full smart collar — the same network and alerts in a clip-on the size of a large tag.
- Who should skip it
- You want the longest track record. This is a newer product with a thin review base so far. Rated 4.2 stars on only a handful of ratings so far, under our usual 4.3 bar.
The verdict
Fi's answer to the main objection to their collar: some dogs should not be carrying a full smart collar, and many owners have a collar they like already. The Mini clips onto it, keeps the same nationwide live tracking, safe zones and escape alerts, and adds steps, active minutes and rest logging. Fi state up to six weeks of battery and an IP68 waterproof build, and Fi now sells it as hardware only, with the membership required and bought separately. The honest caveat is evidence: the Amazon review base is small and the rating is middling so far, so this is a newer product without the track record of the flagship collar. Budget for the plan from day one, and check coverage in the areas where you actually walk before committing.
Drawbacks
- Small review base and a middling rating so far
- Clip-on hardware can be lost where a collar cannot
Plan: required — $189 a year or $339 for two. Fi's billing page says an active membership is required to activate the tracker and is billed separately from the hardware; the same prices cover Fi Mini and Series 3+, and first terms carry a six-month minimum. A six-month plan is $99. Fi lists the Mini at $99 on its own store, the same price as the listing we link, which includes no membership. Fi — Membership billing (help centre) (read 2026-09-26).
WagScore
62out of 100- Owner satisfaction
- 52
- Stage fit
- 87
Owner satisfaction from the product's Amazon star rating and review count; stage fit from our own assessment of how well it suits a dog at adolescent, adult stage.
What the listing says
- Lower hardware price than Fi's Series 3+ collar
- Clips to an existing collar and suits smaller dogs
- Manufacturer states up to six weeks of battery life
Specifications
- Type
- GPS tracker (collar attachment)
- Battery Life
- Up to 6 weeks (manufacturer-stated)
- Membership
- Required, sold separately (plan chosen at activation)
- Connectivity
- GPS + nationwide cellular
- Waterproof
- IP68
- Charging
- USB-C
- Weight
- 16 g (0.56 oz)
- Fits
- Most collars and harnesses
- Best For
- Small dogs, and keeping the collar you already own
From the maker’s listing and Amazon’s product data. Fields the listing doesn’t state are left out, not assumed.
If this one isn’t right
Skip it if: You want the longest track record. This is a newer product with a thin review base so far. Rated 4.2 stars on only a handful of ratings so far, under our usual 4.3 bar.
Our top pick on this shelf, if you would rather start from what we recommend first.
$65.69
A different kind of thing — GPS containment fence rather than GPS collar or tracker.
$999.00
← Back to the gps trackers comparisonNot sure what stage your dog is in? →
Guides that cover this
Where we wrote about this shelf at length — the reasoning behind the pick, not another version of it.
Gear
Pairs with
What tends to be needed alongside gps trackers — hand-picked adjacencies, not "customers also bought".
$59.99 Owner rating 4.6 out of 5 · 19,114
A tracker only reports where the collar is, so what it attaches to is part of the purchase.
$14.98 Owner rating 4.6 out of 5 · 16,053
Recall is the cheaper half of this problem, and the tracker is the insurance on it.
4Knines Rear Seat Cover (fold-down)
$99.99 Owner rating 4.7 out of 5 · 2,184
Escapes happen at doors and tailgates far more than they happen in fields.
The rest of this shelf
Everything else we currently recommend on the gps trackers shelf — the same need, Protect.
