Fi Puts Its Dog Tracker on Starlink Satellites, Betting Connectivity Is the Moat
Fi launched Ultra, the first consumer dog tracker on T-Satellite with Starlink, keeping dogs locatable past cellular range. The satellite feature is really a subscription play, and the Whistle shutdown shows the lock-in risk baked into pet-wearable memberships.
Fi Ultra puts dog tracking on Starlink satellites
Fi launched Ultra on July 8, positioned as the first consumer dog tracker to use T-Satellite with Starlink, the low-earth-orbit network that turns satellites into cell towers in space. When a dog moves beyond LTE range, the collar switches to satellite automatically, so location updates keep coming in the backcountry or past a rural fence line.
The device pairs that with dual-band GPS, multi-day battery, and Fi Callback, a sound-and-vibration recall feature the company is careful to note uses no electric shock.
Pricing is where the model shows. New members pay $199 for the device plus a $189 annual membership. Existing members can move to Ultra for a $299 flat fee. It's on sale now at fitracking.com and snaps onto the collars of Fi's earlier Series 3 hardware.
The satellite piece rests on infrastructure that only recently went live. T-Mobile launched T-Satellite commercially on July 23, 2025, at $10 a month, using more than 650 Starlink satellites to reach devices where towers don't. Fi is among the first to embed that capability in something other than a phone.
Connectivity is a moat, and a lock-in risk
The recurring fee is the real product. Fi sells a $189-a-year membership, and satellite coverage is the kind of feature that justifies it, deepens the reason to stay subscribed, and raises the cost of switching to a rival collar. For a hardware company, that shift from one-time device sale to durable subscription revenue is the whole game.
The numbers behind Fi point the same direction. The company has raised about $45 million, with a Series B led by Longview Asset Management, and told Fortune it expects to cross $100 million in annual recurring revenue this year. It now sells in dozens of countries and, in March, layered on an AI health product, Fi Intelligence. Ultra extends the pattern: more reasons to pay every month, fewer reasons to leave.
That logic sits inside a growing market. Pet wearables run roughly $3.8 billion in 2026 and are projected to reach $11.4 billion by 2033. Location tracking and health monitoring are the anchor use cases, and both reward whoever owns the connectivity layer.
But the category has already shown operators the downside of subscription lock-in. Fi's Austrian rival Tractive acquired Whistle in 2025 and shut the product line down, bricking thousands of devices and stranding paying customers. That episode is the cautionary counterweight to every "membership" pitch in pet tech: when the collar is useless without the service, the customer's investment is only as safe as the vendor's roadmap.
Fi is betting the moat outweighs the mistrust. Satellite is a genuine differentiator, hard to copy, and useful precisely for the adventure-dog owner most willing to pay. The question is whether that owner values coverage they may use only a handful of times a year enough to carry a second annual fee on top of the T-Satellite economics underneath it.
Whether owners pay for coverage they rarely use
The tell will be attach rate. Watch whether Ultra pulls existing Fi members up to the higher tier and brings in new buyers who weren't tracker customers before, or whether satellite reads as a premium novelty that a small slice of the base adopts.
The second signal is margin. Fi is riding on T-Mobile and SpaceX infrastructure it doesn't own, and satellite connectivity carries real per-device cost. The $189 membership has to cover that and still fund the AI features Fi keeps adding. If the satellite bill climbs faster than attach rate, the moat gets expensive.
The third is trust. The pet-wearable subscription model works only if buyers believe the service will outlast the warranty. After the Whistle shutdown, the brands that win will be the ones that make the recurring relationship feel durable, not fragile. Fi's pitch is that owning more of the stack, connectivity included, is how you earn that. The next year of renewals will show whether owners agree.
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