Fi Series 3+ Smart Dog Collar Review
After 90 days across two test dogs, here's our honest take on the most popular smart dog collar in 2026.
Read the review →Every product we've tested, organized by category. Independent, hands-on, and honest — no sponsored placements, ever.
Every product we've tested, organized by category. Independent, hands-on, and honest — no sponsored placements, ever.
Every product on this page was tested in a real household with real pets for a minimum of 60 days. We measure quantitative metrics (GPS accuracy, battery life, dispensing reliability) alongside subjective factors (app polish, pet comfort, long-term durability). Each review includes pros, cons, a PawCircuit Score out of 10, and a clear recommendation of who should — and shouldn't — buy the product.
Our reviews are independent. We do not accept paid placements, and brands cannot pay to improve their rating. See our editorial policy for the full methodology.
After 90 days across two test dogs, here's our honest take on the most popular smart dog collar in 2026.
Read the review →60 days of real-time tracking, health vitals, and bark monitoring — is the $79 Tractive the best budget GPS collar?
Read the review →60 days of GPS fencing, training feedback, and tracking — does the $549 Halo Collar 5 actually replace a physical fence?
Read the review →60 days of off-grid tracking for hunting and ranch dogs — is the $599 Garmin Astro 430 the best no-subscription tracker?
Read the review →60 days of unlimited GPS fencing on a 40-acre property — is the $999 SpotOn the best premium wireless fence collar?
Read the review →60 days of treat tossing, bark alerts, and doggy diary entries — is the Furbo 360 worth the $210 price tag?
Read the review →60 days of treat tossing, video streaming, and motion alerts — is the $99 Petcube Bites 2 Lite the best budget pet camera?
Read the review →60 days of laser play, video streaming, and treat-free monitoring — is the $129 Petcube Play 2 the best non-treat pet camera?
Read the review →60 days of remote-controlled roaming, treat tossing, and pet interaction — is the $159 Skymee Owl the most fun pet camera?
Read the review →60 days of using a $25 Bluetooth tracker as a budget pet tracker — is the Tile Mate worth it, or should you spend more on GPS?
Read the review →60 days of outdoor pet monitoring — is the $79 Reolink Argus PT Ultra the best outdoor pet camera for yard and kennel use?
Read the review →After 90 days, 600+ cycles, and a multi-cat household — does the $849 Litter-Robot 4 actually solve the litter box problem?
Read the review →60 days of self-cycling, app-controlled litter management — is the $499 PETKIT Pura Max the best budget alternative to the Litter-Robot 4?
Read the review →60 days of crystal-litter self-cleaning — is the $199 PetSafe ScoopFree Ultra the best budget self-cleaning litter box?
Read the review →60 days of scheduled meals, camera check-ins, and portion-controlled diets — is the $129 PETLIBRO Granary the best smart feeder for the money?
Read the review →60 days of Alexa-controlled feeding and 24-cup capacity — is the $99 PetSafe Smart Feed the best app-controlled feeder for medium dogs?
Read the review →60 days of scheduled multi-meal feeding — is the adorable $59 Catit PIXI the best budget smart feeder for cats?
Read the review →60 days of WiFi-controlled feeding — is the $89 PETLIBRO Ultra the best budget WiFi feeder on the market?
Read the review →60 days of scheduled feeding on a budget — is the $69 WOPET the cheapest reliable WiFi feeder?
Read the review →60 days of scheduled wet-food meals for a prescription-diet cat — is the $129 PETLIBRO Polar the only credible wet food auto feeder?
Read the review →8 weeks of fall migration, 400+ bird visits, and 31 species identified — is the Bird Buddy PRO Solar the best AI bird feeder in 2026?
Read the review →8 weeks of dual-lens bird photography — is the $219 Birdfy 2 the best value AI bird feeder in 2026?
Read the review →8 weeks of hummingbird photography — is the $199 Birdfy Hummingbird Feeder the best specialized AI bird feeder on the market?
Read the review →60 days of medical-grade vitals tracking, reviewed by three veterinarians — is the $395 PetPace V3 the only true health collar?
Read the review →60 days of cardiac scanning, respiratory tracking, and GPS location — does the compact $149 Invoxia Minitailz deliver medical-grade insights?
Read the review →60 days, three pets, and one food thief — does the $149 SureFeed actually solve the multi-pet feeding problem?
Read the review →60 days of RFID-tagged feeding, app-tracked intake, and multi-pet management — is the $169 PETLIBRO RFID the smart feeder to beat?
Read the review →60 days of microchip-activated entry — is the $79 SureFlap the best solution for stopping stray cats from entering your home?
Read the review →60 days of app-tracked pet door usage — is the $179 SureFlap Connect the best smart pet door for monitoring your cat's comings and goings?
Read the review →60 days of cordless hydration — is the $49 PETKIT Eversweet 3 Pro the best budget water fountain for cats and small dogs?
Read the review →If you're looking for a product we haven't reviewed yet, let us know. We prioritize reader requests and test new products monthly. You can also browse our complete buying guides library for category-level recommendations.