See what’s under your keel.
Before you feel it.
Pathr is the modern boating app that keeps you in safe water. Depth-aware auto-routing, live weather and AIS traffic, and anchor charts that show what’s on the bottom. One app, all offline, built on official NOAA charts.
Free to download · Works offline · No account needed to start
Running aground is the second most common reason boaters call for help, about 1 in 8 tow calls. Pathr is built to keep you off the bottom.
I’ve been sailing since I was a kid. I’ve also spent my career as a flight test engineer on safety-critical autonomous systems. We built Pathr because the boating app I wanted didn’t exist. I test it on my own Catalina 38 every weekend I can.
You don’t fear the water. You fear what’s under it.
Most boat owners aren’t professional captains. They juggle weather sites, paper notes, an outdated chartplotter, and four or five phone apps to plan a single weekend, then hope the pieces add up out on the water, in the dark, when a shoal or a squall or a dragging anchor won’t wait for you to catch up.
Pathr closes that gap. The depth, the traffic, the weather, and a safe route, in one app on the device you already carry, working even when the signal doesn’t. Built by people who actually sail.
Connect the dots
Routing, traffic awareness, weather overlays, and harbor intelligence, all in one modern app.
A captain in your pocket
Pathr Co-Captain is the AI co-pilot built into Pathr. It briefs your trips, watches the things you can't, and learns your boat.
No forced upgrades
Professional-grade navigation without forcing anyone to replace gear they already trust.
One app instead of five
The chart, the depth, the weather, the traffic, and the route, on the phone already in your pocket. Here is what that looks like on the water.
A safe route in one tap.
Tell Pathr where you want to go and it draws a route that stays in water deep enough for your boat, then scores it. Green means clear. It reads the chart so you don't have to.
The chart that shows what's under you.
Real depth soundings, contours, buoys, and marina detail on official NOAA charts, with your live GPS position right on top. See the shoal long before your keel does.
Know the traffic before it's a problem.
See the vessels around you in real time, with collision alerts when something is closing on your course. Never wonder again whether that cargo ship has seen you.
Sleep through the night at anchor.
Drop a watch circle and Pathr keeps an eye on your swing. If the anchor starts to drag, it wakes you before you are on the rocks, not after.
Every forecast that matters, in one place.
Wind, waves, temperature, radar, and tides, overlaid on your chart and packed into a clean marine forecast. Make the call before you leave the dock.
On the water in three taps
No new hardware, no manual, no account to get started. Download it and go.
Download free
Get Pathr on iOS in under a minute. The core chart and your live position are free, with no account required.
See where you are
Your GPS position lands on official NOAA charts, with real depth, buoys, and marina detail all around you.
Get a safe route
Tap your destination and Pathr routes you there in water deep enough for your boat, offline the whole way.
Free on iOS · Works offline · Official NOAA charts
This isn’t just a nav app. It’s becoming a marine intelligence layer.
Meet your co-captain.
The world’s most experienced captain. Trained on every trip, every boat, and every set of conditions.
Pathr already runs the routing engine, the chart stack, the AIS pipeline, the weather model, and your vessel profile. The Co-Captain reasons on top of that real data. It doesn’t hallucinate the boat. It reads it.
Not ChatGPT for boating. Co-pilot, not autopilot. You’re still the captain.
"Wind looks 10–14 from the WNW most of Saturday. Your Beneteau has handled this profile fine on the last three runs — avg 4h 20m. One thing to watch: fog offshore through about 10 AM. I'd push departure to 09:30. Want me to update the plan?"
Briefs you before you cast off.
Reads the forecast against your boat, your route, and your skill. Departure window, what to pack, what could change.
Watches the things you can't.
AIS traffic closing from your blind side. Wind backing 20° over the next hour. A shoaling tide near your planned turn.
Looks after the boat between trips.
Tracks engine hours, fuel burn, oil intervals, batteries. Surfaces what's due before it becomes a problem on the water.
Navigation
Depth-aware routing, live AIS, and offline NOAA charts. The app in your pocket today.
Co-Captain
An AI that reads your boat and the conditions and tells you what a sharp first mate would.
HelmLink
The bridge from Pathr to your autopilot. The layer, all the way to the helm.
You’re downloading step one. The rest is coming, and the boaters who come aboard early help shape it.
Pathr, meet the helm.
HelmLink is the bridge from Pathr to your boat: a small hardware link designed to talk to your existing autopilot, so the route you plan in the app can carry all the way to the helm. The intelligence layer, wired into the boat.
Back the layer. Come aboard at the founding.
The app is free, and always will be to start. But the boaters who back Pathr now help build the Co-Captain, get early access as it ships, a permanent founding badge, and a real vote on the roadmap. Founding pricing ends Aug 31 and won’t come back.
The free App Store download stays the fastest way to start.
Built by boaters who got tired of "good enough"
A uniquely capable team, purpose-built to execute. We're not a big marine electronics company. We're boat owners building the tool we wish existed.
- Flight test engineer on safety-critical autonomous systems
- National Test Pilot School graduate
- Sailing since childhood; competed nationally in junior sailing
- Tests Pathr on his own Catalina 38
- Founding engineer at an automation startup acquired by a $1B+ technology company
- Full-stack geospatial engineer
- IoT systems architect
- Built remote-control hardware and cloud systems at commercial scale
- Pre-Series startup experience
- Award-winning innovative product developer, concept to commercialization
- Rapid & frugal prototyping expert
"Let Pathr handle the routing. Let your co-captain watch the details. You focus on boating."
The latest from the team.
Release notes, field reports, and product updates. Same feed the app uses, on the web.
Download Pathr.
Pathr Navigation is live on iOS. Android is on the way.
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