Comparison
Tractive vs Fi vs Whistle: Which Pet GPS Tracker Wins?
We compared the three biggest pet GPS trackers head-to-head on range, battery, accuracy and cost. Here's which one to buy and why.
Three trackers dominate the pet GPS market, and they take very different approaches. We tested all three side by side. Here’s how they stack up.
The quick verdict
For most owners, Tractive wins on the thing that matters most — reliable, unlimited real-time range. Fi is the battery champion and the pick for tech-lovers. Whistle leans hardest into health tracking.
Tested January 2026. Subscription prices vary by plan length.
| Winner Tractive | Fi Series 3 | Whistle | |
|---|---|---|---|
| Live update speed | 2–3 sec | Every few min | 15 sec |
| Battery life | ~7 days | Up to 3 months | ~2 days |
| Range | Unlimited (LTE) | Unlimited (LTE) | Unlimited (LTE) |
| Subscription | Required | Required | Required |
| Best for | Real-time tracking | Battery + durability | Health metrics |
How we’d choose
Pick Tractive if real-time accuracy is the priority. Pick Fi if you hate charging things. Pick Whistle if activity and health data matter as much as location.
See our top pick at Tractive $49.99