VesselFinder vs TZ iBoat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VesselFinder
Track ships and monitor maritime traffic globally in real-time. Access detailed vessel information, movement history, and predicted routes. Ideal for maritime professionals and enthusiasts alike.
- Real-time vessel tracking
- Vessel movement history
- Predicted routes and ETAs
- Comprehensive vessel particulars
- Port call details
- My Fleet for favorite vessels
- Weather overlays
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VesselFinder is the world’s most popular and trusted vessel tracking and marine traffic app, delivering real-time information on ship positions and movements worldwide. Using a powerful network of satellites, roaming and terrestrial AIS receivers, VesselFinder provides accurate and up-to-date insight into global maritime activity. Designed for maritime professionals, shipping enthusiasts, and anyone interested in live ship tracking, VesselFinder offers a fast, intuitive, and reliable way to explore vessel traffic across the globe. VesselFinder key features: • Real-time tracking of over 300,000 vessels daily using global AIS data • Vessel movement history with track visualization • Predicted routes and ETAs to next port • Comprehensive vessel particulars, including technical specifications, and cargo capacity information • Contact details for the owning company, manager, ISM manager, and more • Port Calls per vessel, showing arrival times and duration of stay • Port Calls per port, with detailed lists of expected vessels, arrivals, departures, and ships currently in port • My Fleet – save and monitor favorite vessels, synchronized with your VesselFinder account • My Views – save preferred map views for fast and easy navigation • Ship Photos contributed by the VesselFinder user community • Multiple map styles: Simple, Detailed, Dark, Satellite, and Nautical • Weather overlays, including wind, waves, and temperature • See your location feature for instant orientation • Distance measurement tool for route and range estimation Vessel visibility depends on AIS signal availability, with near-shore coverage consistent with the data provided on VesselFinder.com. If a vessel is outside our terrestrial AIS coverage area, its last reported position will be displayed and updated as soon as new data is received. Extended real-time coverage via satellite and roaming AIS sources is available through a subscription. While we make every effort to ensure accuracy, the completeness of the information cannot be guaranteed. Connect with VesselFinder • Facebook: http://www.facebook.com/vesselfinder • Twitter: http://www.twitter.com/vesselfinder
TZ iBoat
Navigate the seas with advanced marine charts, GPS, and AIS data, even offline. This app offers detailed bathymetry, community-contributed map data, and dynamic features for safe boating, sailing, and fishing.
- Offline marine charts
- GPS and route planning
- AIS Online tracking
- Community map contributions
- Dynamic mooring and lighting
- Advanced fishing tools
- Tides and tidal currents
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Your next-generation chartplotter. Navigate with the world’s #1 marine charts app for coastal boating, sailing, and fishing. Marine GPS, nautical charts, AIS Online, tides & tidal currents, anchoring, marine weather, radar, sounder, and NMEA data — everything you need for safer navigation at sea. Built for sailors, boaters, and fishermen who need reliable navigation anywhere, online or offline. THE SMARTEST AND CLEAREST NAVIGATION INTERFACE AT SEA A cutting-edge interface makes navigation clearer and faster: • TZ Bar: quick access to key features • Dedicated screens: Weather, Fishing, NavData, Logbook, Mooring, Tides, Sounder • Cleaner chart view, easier to read • Customizable interface for faster access • Modern design focused on readability WHAT YOU CAN DO WITH TZ iBoat • Navigate with marine GPS and nautical charts • Monitor AIS targets locally and globally • Plan routes and anchor safely • Access tides, currents, and weather forecasts • Fish smarter using oceanographic data FOR SAILORS & BOATERS – Navigate safely • TZ MAPS: vector, raster, satellite, and bathymetry charts • SMART SEARCH: find marinas, buoys, tide stations, routes • DYNAMIC LIGHTS: real-time light sectors • DYNAMIC MOORINGS: wind-aware anchorage • Precise GPS for coastal navigation AIS & SAFETY – Stay aware beyond your horizon • AIS ONLINE: global AIS targets via internet (Essential plan) • Share AIS data with the community • Radar and onboard instrument integration • Real-time traffic awareness for safer navigation FOR FISHERMEN – Gain the edge Turn ocean data into real fishing results: • Identify productive zones using SST, chlorophyll, currents, altimetry (Elite plan) • Spot fish-holding conditions faster • BATHYVISION: high-resolution bathymetry with contour lines • Target high-potential areas with precision • EVENT & CATCH: log and analyze catches on nautical charts WEATHER – Clearer and more useful • Dedicated Weather screen • Real-time forecasts and offline access • Rain Radar with lightning data • High-resolution models available in Premium plan • Iridium GO! compatibility CONNECTIVITY & PRECISION • NMEA connectivity: manage and prioritize data sources • Connect AIS, radar, autopilot, and instruments • Latitude/longitude keyboard optimized for use at sea • Easy coordinate entry with multiple formats COMMUNITY & ECOSYSTEM • COMMUNITY MAPS: share local knowledge (hazards, POIs, marinas) • Contribute and improve charts • Trusted by 500,000+ boaters worldwide SUBSCRIPTION PLANS Choose the plan that fits your needs: • Essential: AIS Online, onboard instruments, autopilot integration via Wi-Fi NMEA • Premium: Essential + high-resolution forecasts, Rain Radar, multiple models, comparison • Elite: Premium + ocean layers (SST, Chlorophyll, SSH, Currents). Monthly and annual plans available, with savings on yearly options. Core features remain available for free. CHARTS AND DATA PLANS SUBSCRIPTIONS: The payment will be debited from the Apple account once the purchase is confirmed. The subscriptions and automatic renewals can be managed by entering the account settings after making the purchase. Any unused part of a free trial period, if offered, will be lost when a subscription is purchased. Terms of use: https://mytimezero.com/eula/ Privacy policy: https://mytimezero.com/privacy-statement/
Screenshots
Verdict
The clearest difference is review sentiment: TZ iBoat at 79% against VesselFinder's 28%. TZ iBoat also leads on ads (none vs shown) and rating (4.6 vs 4.2). VesselFinder's advantage is in-app purchases (none vs 10). On price, update cadence, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. TZ iBoat sells 10 in-app purchases, starting at $2.99 per month. VesselFinder asks for nothing beyond the download.
TZ iBoat holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 284 and 887 respectively. Written reviews point the same way: 28% of VesselFinder's written reviews are positive against 79% of TZ iBoat's.
VesselFinder ships an update fortnightly, TZ iBoat every 8 days. Both last shipped on November 6, 2026.
| Parameter | VesselFinder | TZ iBoat |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (284 ratings) | 4.6 (887 ratings) — better |
| Positive reviews | 28.2% of reviews | 79.4% of reviews — better |
| Number of ratings | 284 | 887 — better |
| Update frequency | Fortnightly | Every 8 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #106 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.2 — better |
| Further details — not scored | ||
| Size | 47 MB | 428 MB |
| Age rating | 4+ | 4+ |
| Developer | AstraPaging Ltd. | Nobeltec, Inc. |
Customer experience
VesselFinder
TZ iBoat
User reviews
VesselFinder
From 284 App Store ratingsWhat we love
- 👍 Simple and intuitive user interface
- 💰 Free version provides basic functionality
- 🗺️ Clear map display with sea blue and land green
- 📊 Comprehensive vessel information available
- ⚓ Good for casual ship tracking and hobbyists
Room to improve
- ⏱️ Severely outdated vessel position data (days old)
- 🐛 App freezes on startup/splash screen frequently
- 💸 Misleading free version with limited functionality
- 🔄 Inconsistent and unreliable data updates
- ❌ Search functionality requires paid version
TZ iBoat
From 887 App Store ratingsWhat we love
- 🚀 Easy to use
- 🚀 Accurate charts
- 🚀 Useful features (weather, tides, currents, etc.)
- 🚀 Good integration with Furuno radar and AIS
- 🚀 Seamless cloud sync between devices
Room to improve
- 🐛 Occasional crashes or freezing
- 🐛 Inaccurate or outdated charts in some areas
- 🐛 Anchor alarm not loud enough
- 🐛 Difficulty importing/managing routes and waypoints
- 🔋 Battery drain on mobile devices
Bugs and requests
VesselFinder
Reported bugs
15 issues- App freezes on splash screen and won't load
- Crashes when attempting to zoom on map
- Black screen display on certain devices
- App won't open or opens after long delays
- Crashes on iOS 11 and newer versions
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- Incompatible with iPhone X and newer models
- Data not updating for days or weeks
- Crashes when searching for vessels
- Freezing issues after recent updates
- Map not displaying on iPad
- App crashes in low power mode
- Vessel information not loading correctly
- Inconsistent performance across iOS versions
- App becomes unstable after working briefly
- Zoom functionality broken in multiple versions
Requested features
13 requests- Real-time GPS tracking instead of delayed AIS data
- Distance measurement tool restoration
- German language support
- Destination and departure information display
- Ability to remove ads without expensive pro version
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- Better search functionality in free version
- Vessel departure time information
- Improved map zoom functionality
- Live results in search function
- Picture display before clicking on vessel
- Better map background/quality
- Local time display instead of UTC only
- Ability to delete incorrect vessel photos from profile
TZ iBoat
Reported bugs
3 issues- GPS position not updating reliably while moving
- Radar overlay not functioning properly
- Compatibility issues with older devices or iOS versions
Requested features
5 requests- Automatic routing and trip planning
- Improved satellite imagery and overlays
- Better integration with other marine electronics
- More customization options for data displays
- Ability to mirror camera feeds as a rear-view
In-app purchases
VesselFinder
No in-app purchases
TZ iBoat
- Essential Subscription$2.991 Month
- Premium Subscription$9.991 Month
- Great Lakes7 Days trial$19.991 Year
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- Canada West7 Days trial$19.991 Year
- USA7 Days trial$19.991 Year
- Bahamas7 Days trial$30.991 Year
- Central America & Caribbean7 Days trial$30.991 Year
- Elite Subscription$39.991 Month
- AIS module$8.99
- Radar module$49.99








