Fi Series 3 vs Whistle GO Explore
Head-to-head comparison based on trust scores, features, pricing, and real user feedback.
Our pick: Fi Series 3 (Trust Score 9.1 vs 8.5)
9.1
Excellent
Best Overall
Pros
- +Industry-leading battery life — up to 3 months on a charge
- +Accurate real-time GPS tracking via LTE and WiFi
- +Instant escape alerts when your dog leaves a safe zone
Cons
- −Requires a subscription ($99/year or $8.25/month)
- −Collar band options are limited in sizing for very small dogs
Don't buy if
- ⚠ Ongoing subscription cost adds up — budget $99/year on top of the collar price
- ⚠ LTE coverage gaps in very rural areas can cause tracking delays
8.5
Excellent
Best Battery Life
Pros
- +Health monitoring detects behavioral changes like excessive licking or scratching
- +Up to 20-day battery life
- +AT&T LTE provides wide US coverage
Cons
- −Monthly subscription required ($9.95/month or $95.40/year)
- −Bulkier than competitors — not ideal for small dogs under 15 lbs
Don't buy if
- ⚠ Device is quite large — check sizing before buying for small breeds
- ⚠ Health monitoring is behavioral, not medical — don't rely on it for diagnoses