Tractive
Tractive GPS DOG 6
$79
Best Dog GPS Trackers · head-to-head
Tractive GPS DOG 6 vs Fi Series 3+
A sourced, side-by-side comparison. Tractive GPS DOG 6 is cheaper at $79. Every spec and price links to its source.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Tractive GPS DOG 6 |  Fi Series 3+ |
|---|---|---|
| US price | $79 | — |
| Brand | Tractive | Fi |
| Released | — | — |
| Connectivity type | lte-cellular | lte-cellular |
| Positioning system | gps-glonass-galileo | gps |
| Subscription required | Yes | Yes |
| Monthly fee usd | 5 | — |
| Battery life days | 14 | — |
| Live update interval sec | 2 | — |
| Weight grams | 39 | — |
| Waterproof rating | IP68 | IP68 |
| Range miles | — | — |
| Activity tracking | Yes | Yes |
| Health monitoring | Yes | Yes |
| Containment fence | No | No |
Sources — Tractive GPS DOG 6: tractive.com (verified 2026-07-13). Fi Series 3+: fitracking.com (verified 2026-07-13).
What's the difference between the Tractive GPS DOG 6 and Fi Series 3+?
Where the two actually differ on the specs we track (1 of 12). Matching specs are omitted.
- Positioning system: Tractive GPS DOG 6 gps-glonass-galileo vs Fi Series 3+ gps
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Tractive GPS DOG 6
One whitelisted tester, Reviewed (USA Today), covers the exact 6th-gen Tractive (sold as DOG 6), naming it Best Overall in an April 2025 editorial roundup. It praises superior tracking across multiple cell-service providers, reasonable subscription fees, waterproofing, and 6th-gen additions (improved battery, brighter nighttime LEDs, bark monitoring), while flagging bulk and occasional app lag. No whitelisted outlet published its own hands-on measurements of this generation; Reviewed's accuracy claims are aggregated from other publications rather than its own lab test. (1 sourced review.)
Praised: Fast, accurate tracking across multiple cell-service providers; 6th gen adds improved battery life, brighter nighttime LEDs, and bark monitoring; Waterproof, with reasonable subscription pricing; named Best Overall pet tracker.
Flagged: Bulkier than compact competitors such as the Fi Series 3; App can be glitchy or laggy at times.
Fi Series 3+
No sourced tester review yet.