Heat Map is live in the Fi app today. It's a new layer on the Fi map that turns a week of your pet's GPS data into something you can actually see — every route they run, every spot they return to, every corner of the neighborhood they've quietly made their own. Toggle it on from the map layers button and color fills in across the map: green for places they pass through occasionally, yellow for the ones that have become a habit, red for wherever they go almost every single day.
No setup required. If your pet has been wearing Fi, the data is already there waiting.
How to Turn It On
- Open the Fi app and go to the map from the Live tab
- Tap the layers button in the top right corner
- Toggle "Heat Map" on
- A color-coded overlay appears — green (occasional), yellow (frequent), red (daily)
- Zoom in to explore individual routes and hotspots
- Toggle off to return to the standard map view

For Cat Owners
Dog owners will find their heat maps satisfying — the morning loop, the park, the worn path through the backyard. For cat owners, this is something else entirely. Outdoor cats don't follow walk routes. They have territories — a patchwork of yards, alleys, and spots they've scouted and claimed through years of quiet exploration. They move through the neighborhood on schedules and paths that have nothing to do with you, and they've never had any reason to share the details. Heat Map makes all of it visible. The trails they follow every morning, the places they spend their afternoons, the specific spots that light up red because they've been going back to them for months. Most cat owners are genuinely surprised by what they find — not just where their cat goes, but how deliberate and consistent it turns out to be.
Heat Map is available now for all US members on iOS.