MarineTraffic

At any given moment, hundreds of thousands of hulls are moving across the planet’s water, and almost all of them are broadcasting who they are. MarineTraffic, from MarineTraffic Applications LTD, is the app that turned those radio signals into something you can browse on the couch. It gathers AIS (Automatic Identification System) transmissions from what the company calls the world’s largest network of receivers on land, at sea and in orbit. Every day it plots near real-time positions for more than 350,000 vessels, from VLCC tankers and container ships to ferries, cruise liners, trawlers and private yachts.

Its market position is unusual. MarineTraffic is both a consumer toy and professional infrastructure. Freight analysts, port agents and charterers use the same map as the retiree tracking his daughter’s cruise and the ship spotter on a harbour wall. That dual audience explains most of what is good about the app and most of what is frustrating about it.

The business model is free with in-app purchases, topped by a Mobile Pro subscription. Pro adds satellite AIS for open-ocean tracking, a deeper archive of historical tracks, extra fleet-monitoring tools and more data layers. On paper the split makes sense: casual users get the coastline, paying users get the open ocean. In practice, recent updates have moved the line, and long-time users have noticed. The app holds a 4.8/5 rating from 64,992 iOS ratings, which shows real affection. Read those reviews, though, and a clear pattern of monetization complaints runs through the praise.

This is the category leader, and it behaves like one: confident, polished, and increasingly focused on getting paid.

• Live Global Vessel Map: Near real-time positions for 350,000+ ships, drawn from terrestrial, sea-based and satellite AIS receivers. Coverage is strongest near coasts and ports.
• Vessel Detail Cards: Tap any ship to see its name, flag, type, speed, course, destination and ETA, plus photos and past port calls.
• Search, Fleets & Port Monitoring: Find ships and ports by name, save a fleet of favourite vessels, and follow arrivals and departures at ports worldwide.
• Voyage Planner & Predictive ETAs: Compare routes and get estimated arrival times based on the company’s own modelling rather than only the destination a crew typed in.
• Weather Layers: Wind and sea-state overlays that explain why a ship is loitering offshore or slowing down.
• Augmented Reality Mode: Point your camera at the water and each nearby ship is labelled with its name, flag, speed, distance and destination.
• Mobile Pro Subscription: Satellite AIS for open-ocean tracking, extended historical tracks, more fleet tools and extra maritime data layers.

The Core Loop: Curiosity, Answered in One Tap

MarineTraffic is built around a single, very effective loop: see a ship, tap it, learn its story. The payoff is immediate. That rust-streaked bulk carrier off the breakwater turns out to be Panama-flagged, doing 11 knots, bound for Rotterdam and due Thursday. Its last five port calls read like a travel log. Few apps turn passing curiosity into this much concrete information this quickly.

The detail card does the heavy lifting. It covers identity, movement and intent in one compact panel, and the photo gallery, much of it contributed by the ship-spotting community, gives the dot on the map a real face. For professionals the port-call history is the useful part. For hobbyists the photos are. Both get what they came for.

Coverage: Excellent Near Shore, Conditional Beyond It

The terrestrial AIS coverage near coastlines and busy ports is the app’s strongest asset. In a harbour, a strait or along a major coastal route, positions update frequently and the map feels alive.

Offshore is different. Coastal receivers only reach so far, and past that range the free tier loses the trail. This is where satellite AIS is supposed to justify the Mobile Pro subscription, and where the app’s most damaging complaint appears. Some paying subscribers report satellite positions delayed by hours. For a hobbyist, a four-hour-old position is a curiosity. For someone monitoring a charter or a cargo ETA, it defeats the purpose of paying. Satellite AIS has real technical limits, including revisit windows and signal collisions in dense traffic. But when your premium tier is built on open-ocean visibility, that caveat belongs on the paywall screen, not in one-star reviews.

Planning Tools: More Substance Than Expected

The Voyage Planner and predictive ETAs are what move MarineTraffic from spectator app to working tool. Destination fields in AIS are entered by crews and are often vague, abbreviated or out of date. A modelled arrival estimate is more useful than a hand-typed “ROTTERDAM” with no date. Paired with weather layers, the planning features let you reason about delays instead of just seeing them. None of this replaces professional voyage-management software. For a small operator, a yacht owner or a curious relative, it is more than enough.

AR Mode: A Gimmick That Earns Its Place

Augmented reality in utility apps is usually a demo feature nobody opens twice. Here it answers the question anyone standing at the water’s edge actually asks: what is that ship? Hold up your phone and the ferry, the tanker at anchor and the yacht crossing the bay all get labels showing name, flag, speed, distance and destination. It is the most intuitive part of the app. For ship spotters it replaces a lot of squinting and cross-referencing.

Monetization: The Line Keeps Moving

The app loses goodwill here. Long-time users say recent updates moved features that used to be free behind the subscription, specifically course vectors, route tracks and map customization. Worse, some free unlocks reportedly expire when you close the app, so you redo the same steps every session. That is deliberate friction meant to push users toward Pro.

Charging for satellite data is reasonable, because it costs real money to acquire. Charging for a vector line drawn from data the app already displays is harder to defend. And a handful of users say they struggled to reach support. That is a bad look for any subscription product, and worse for one whose premium feature has reliability complaints.

The redesigned interface is a clear improvement. The map is uncluttered, vessel icons are colour-coded by type so the traffic reads at a glance, and the detail cards are laid out sensibly rather than stuffed with every available field.

An app drawing hundreds of thousands of moving objects is inherently demanding, and the design leans on efficient icon rendering and layered data to keep the map readable in dense areas like the English Channel or the Singapore Strait. The AR mode is heavier on battery and processor, as you’d expect from camera-plus-location work. The main visual complaint isn’t rendering. It’s that the paywall now controls how much of the map you can customize, so the tidy design sometimes feels less like restraint and more like features held back.

On iOS, MarineTraffic is at its most polished. Map gestures feel natural, the detail sheets slide up in the platform’s familiar pattern, and the AR mode benefits from Apple’s consistent camera and sensor hardware. The 4.8-star rating across 64,992 ratings suggests the experience is dependable on Apple devices.

On Android, the feature set is the same, but hardware varies more. AR in particular depends on the phone’s camera, compass and motion sensors, and an uncalibrated magnetometer on a budget handset can put labels on the wrong ship. The map and search behave the same on both platforms. If AR matters to you, a recent mid-range or flagship Android phone is the safer choice.

On both platforms the touch-first design works well. There is no desktop-style clutter, and the app understands that most sessions last about 30 seconds: spot, tap, learn, close.

MarineTraffic is the default ship tracker for good reason. Its receiver network is unmatched, its vessel data is thorough, and its interface finally looks like a modern app. The AR mode is one of the few augmented-reality features in any utility app that people will actually keep using. Within coastal range, it does what it promises.

The trouble is at the edges. The free tier keeps shrinking, some unlocks disappear when you close the app, and the Pro plan’s main selling point, satellite coverage of the open ocean, comes with credible reports of hours-long delays. For casual users the free app is still worth installing today. Professionals should use the Pro trial window, if one is offered, to measure satellite latency on the routes they actually care about before committing to a subscription. MarineTraffic is still the most capable app in the category, but its latest updates have made it hard to recommend for most people without reservations.