Introducing Fi, the world’s first LTE smart dog collar.

Paired with a Fi collar, the Fi app brings you even closer to your dog. View your dogs location and activity levels on the app, and be alerted if they ever escape from a designated safe area. The smartest pet parents choose Fi.


On vacation? Friend walking the dog? Instantly track your dog’s location no matter where they are. Fi gives you the peace of mind to always know that your dog is safe.

Make sure your dog never escapes from your backyard. Fi lets you designate safe zones around your dog’s most popular residences, whether that’s your house or your grandma’s, and we’ll alert you if they ever leave home without a walker. So, if your dog runs out the gate you forgot to close, you’ll be the first to know.

Fi measures the steps your dog takes and compares it to other dogs wearing a Fi collar, so you’ll always know how much exercise they’re getting, and how much more they need. Set daily goals to hit and view all previous walks and activity. Keep your dog happy and healthy with Fi.

We’re putting an end to lost dogs. If your dog’s got out, enable Fi’s unique Lost Dog Mode at the click of the button. A red light will appear on their collar, and the collar will report its location every minute as they move. Make sure you never lose hide and seek again, with Fi.

Introducing the world’s first LTE dog collar. Running on a brand new LTE-M network, you’ll only receive the most accurate location reports and always know where your dog is.

If we lose our dog the last thing we should worry about is battery life. Part of the reason we built Fi is because we didn’t feel that other smart collars offered enough value to us dog owners. On average, our collars last 3 months between charges. So, it’s another thing you don’t have to worry about.

We care about your dog as much as you do. With live agents ready to talk to you whenever you need, we’ll be right by your side for your journey with Fi.

Coming in two different colors and three different sizes, Fi works for any dog over 20lbs.

Fi works best when connected near a bluetooth connected device with the Fi App or the provided charging base. The latest iOS is required to run Fi. Learn more about what we’re building at:

What’s New

Version 1.4.8

Bug fixes and performance improvements.

Ratings and Reviews

4.8 out of 5
9 Ratings

9 Ratings

Lemmi App ,

Needs improvement on Notification

We just got a rescue dog from a shelter this weekend. Nala was described an escape artist and we needed a solution to keep an eye on her. I did a significant amount of research for pet trackers and FI seemed to be the best technology available. The main objective for us was the option to define a safe zone and get a notification in case she escapes. Unfortunately there is no way to configure what type of notification you will receive. The devices doubles as a fitness tracker for your dog and uses notification to inform you that your dog just took another 32 steps towards your dogs daily movement goal. You do the math how many notification you get when your dog did 24,000 steps. Due to the high number of notifications, you will most likely miss when your dog actually escapes. I would recommend to allow to configure what type of notification a dog owner is interested in. Please provide an option that allows to limit notifications when the dog leaves the safe zone.

Developer Response ,

Congratulations to you and your family on your new, furry addition!
We’re glad to hear that you’ve found Fi to be helpful in keeping tabs on your escape artist. Fi is still a young company, and we take your feedback very seriously as we continuously improve and grow from our customers' experiences.
For context, Fi will send notifications when your pet completes a walk or enters/exits a Safe Zone - it sounds like Nala has been getting her walks in! If you have any other feedback or we can be of assistance in any way, the best way to reach us is through our support email: Thanks, again!

Foster Jackson ,

Peace of mind

Just got our Fi collar, and we and our pup love it so far. Step tracking, GPS maps of every walk, and peace of mind in case she ever gets lost. And 3 month battery life? Are you kidding me??? Magic.

theprofessorplumb ,

Such a great product!

Fi is such a great product. The app is intuitive and the ability to scroll through walls is brilliant / intuitive UI. Plus the GPS collar feels really sturdy and well made.

Thank you Fi!


Barking Labs Corp.
52.8 MB
Health & Fitness

Requires iOS 12.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2018 Barking Labs Corp


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

You May Also Like