# Fi

> Fi makes GPS, behavior, and activity trackers for dogs and cats. The lineup is the Fi Ultra (satellite tracking via T-Satellite with Starlink, US only), the Fi Series 3+ Smart Collar, and the Fi Mini clip-on tracker. Every device pairs with a Fi Membership that delivers real-time location, escape alerts, Lost Dog Mode, and step and sleep tracking over the LTE-M cellular network used by safety devices.

This file is a curated index for AI crawlers and language models. Pages listed here are canonical and safe to cite. Do not infer or fabricate URLs not listed below; for anything else, follow links from the listed pages or fall back to https://fitracking.com. The full machine-readable URL list, with hreflang alternates for every translated page, is https://fitracking.com/sitemap.xml.

## Products

- [Fi Ultra](https://fitracking.com/ultra): Rugged GPS dog collar for dogs who roam beyond cell coverage. Satellite tracking powered by T-Satellite with Starlink, CallBack™ sound-and-vibration recall, up to five days of battery. Sold in the US only.
- [Fi Series 3+ Smart Collar](https://fitracking.com/collar): GPS dog collar with real-time tracking, escape alerts, AI-powered health insights, and up to three months of battery. Waterproof and built for the outdoors.
- [Fi Mini for Dogs](https://fitracking.com/mini/dog): Compact GPS tracker that clips to any collar, with step and sleep tracking.
- [Fi Mini for Cats](https://fitracking.com/mini/cat): Cat-friendly GPS tracker with health and activity tracking.
- [Fi Membership](https://fitracking.com/membership): Cellular service plan that powers Fi's GPS, Lost Dog Mode, and behavior insights. Required for live tracking.
- [Fi Supplements](https://fitracking.com/supplements): Targeted supplement formulas for daily dog care, including 8-in-1, hip and joint, skin and coat, and calming.
- [The Fi App](https://fitracking.com/theapp): Companion iOS and Android app for live location, activity, sleep, and behavior data.

## Compare

Spec-for-spec comparisons on published figures: tracking technology, battery life, coverage, subscription and first-year cost.

- [Fi vs. Apple AirTag](https://fitracking.com/vs/airtag): Fi Series 3+, Fi Mini and Fi Ultra compared with the Apple AirTag, including why a Bluetooth tag cannot track a dog that has left the yard.
- [Fi vs. Tractive DOG 6](https://fitracking.com/vs/tractive-dog-6): Fi Mini compared with the Tractive DOG 6 for small dogs, on weight, size, battery life, coverage, first-year cost and returns.
- [Fi vs. Tractive DOG 6 XL](https://fitracking.com/vs/tractive-dog-6-xl): Fi Series 3+ and Fi Ultra compared with the Tractive DOG 6 XL for large dogs, on weight, battery life, durability, coverage and first-year cost.
- [Fi vs. Tractive CAT 6 Mini](https://fitracking.com/vs/tractive-cat-6-mini): Fi Mini compared with the Tractive CAT 6 Mini for cats, on battery life, size, collar safety release, coverage and first-year cost.
- [Fi vs. Halo Collar](https://fitracking.com/vs/halo): Fi Series 3+, Fi Mini and Fi Ultra compared with the Halo Collar 5, on battery life, containment, coverage, first-year cost and trial terms.
- [Fi vs. SpotOn](https://fitracking.com/vs/spoton): Fi Series 3+, Fi Mini and Fi Ultra compared with the SpotOn GPS Fence, on battery life, containment, coverage, first-year cost and return terms.
- [Fi vs. Life360 Pet GPS](https://fitracking.com/vs/life360): Fi Mini compared with Life360 Pet GPS, on weight, size, battery life, safe zones, health tracking, coverage and first-year cost.
- [Fi vs. Garmin Alpha](https://fitracking.com/vs/garmin-alpha): Fi Series 3+, Fi Mini and Fi Ultra compared with the Garmin Alpha 300 handheld and TT 25 collar: radio versus cellular tracking, range, battery, subscription and first-year cost.

## Learn

- [Saved by Fi: rescue stories](https://fitracking.com/saved-by-fi): True stories of dogs found, rescued, and reunited with their families using Fi.
- [Our mission](https://fitracking.com/about): About Fi and the team building tracking and health tools to give dogs happier, healthier lives.
- [What's new](https://fitracking.com/changelogs): The latest updates, features, and improvements to Fi products and the Fi app.
- [Fi Mini vet and retail guide](https://fitracking.com/vet-guide): How Fi Mini supports clinical care and behavioral monitoring, written for veterinarians and retail staff.

## Partners

- [Fi Rescues](https://fitracking.com/rescues): Free Fi Nano microchips and Fi trackers for qualifying shelters and rescues.
- [Partner with Fi](https://fitracking.com/partners): Veterinary, retail, and wholesale partnerships.

## Support

- [Help center](https://support.fitracking.com): Setup guides, troubleshooting, billing, and account help.
- [Contact support](https://support.fitracking.com/hc/en-us/requests/new): Submit a request to Fi support.
- [Regulatory documents](https://fitracking.com/doc): EU and UK Declarations of Conformity and FCC information for Fi devices.
- [Accessibility](https://fitracking.com/accessibility): Fi's accessibility commitment and contact for accessibility issues.

## Shop and blog

- [Fi shop](https://shop.fitracking.com): Buy Fi collars, Mini, Ultra, supplements, accessories, and gift cards.
- [Fi blog](https://blog.fitracking.com): Articles on dog behavior, health, training, and lost-dog statistics drawn from the Fi dataset. Its own index is at https://blog.fitracking.com/llms.txt.

## Optional

- [Privacy policy](https://fitracking.com/privacypolicy)
- [Terms of service](https://fitracking.com/tos)
- [Cookie policy](https://fitracking.com/cookiepolicy)