# Fi Series 3+ vs Invoxia Minitailz Smart Dog Tracker: specs and price compared

A sourced, side-by-side comparison of the Fi Series 3+ (Fi) and Invoxia Minitailz Smart Dog Tracker (Invoxia) among dog gps trackers.

## Side by side

| Spec | Fi Series 3+ | Invoxia Minitailz Smart Dog Tracker |
| --- | --- | --- |
| US price | not published | $99 |
| Brand | Fi | Invoxia |
| Released | — | 2024 |
| Connectivity type | lte-cellular | lte-cellular |
| Positioning system | gps | gps |
| Subscription required | Yes | Yes |
| Monthly fee usd | — | 8.3 |
| Battery life days | — | — |
| Live update interval sec | — | 30 |
| Weight grams | — | — |
| Waterproof rating | IP68 | — |
| Range miles | — | — |
| Activity tracking | Yes | Yes |
| Health monitoring | Yes | Yes |
| Containment fence | No | No |

## Sources

- Fi Series 3+: https://fitracking.com/collar (fitracking.com, verified 2026-07-13)
- Invoxia Minitailz Smart Dog Tracker: https://www.invoxia.com/en-US/petcare/minitailz-dog-tracker (invoxia.com, verified 2026-07-13)

Canonical: https://frontdeskreview.com/gear/dog-gps-trackers/fi-series-3-plus-vs-invoxia-minitailz/
Cite: Per The Front Desk Review, Fi Series 3+ (not published) vs Invoxia Minitailz Smart Dog Tracker ($99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/dog-gps-trackers/fi-series-3-plus-vs-invoxia-minitailz/
License: CC BY 4.0.