Boat Tracker + vs Underplane
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Boat Tracker +
Monitor real-time maritime activity with a live vessel tracking map. Search for ships by name or ID, view detailed information about vessels and ports worldwide, and save your favorite locations. Offers both free and premium subscription options for enhanced features.
- Real-time vessel and port tracking
- Live marine traffic map
- Search ships by name, MMSI, or IMO
- Detailed vessel and port information
- Save favorite ships and locations
- Fast and user-friendly interface
Read full descriptionHide full description
Track vessels, monitor ports, and explore real-time maritime activity with our powerful and easy-to-use ship tracking app designed for boating enthusiasts, travelers, and marine professionals. Our app provides live vessel tracking with an interactive map that allows you to search ships by name, MMSI, or IMO number and view important details about vessels and ports worldwide. Whether you’re following cargo ships, cruise liners, yachts, or fishing boats, the app helps you stay connected to global marine traffic in real time. Access detailed vessel information including ship name, type, flag, current position, and route details. You can also explore port information, arrivals, departures, and active maritime traffic directly from your device. The app is designed with a clean and intuitive interface, making navigation simple and convenient for both casual users and advanced maritime enthusiasts. Key Features: - Real-time vessel and port tracking - Live marine traffic map - Search ships by name, MMSI, or IMO - Detailed vessel and port information - Save favorite ships and locations - Fast and user-friendly interface - Worldwide ship tracking support Free features include access to the live ship map and basic vessel information. Advanced vessel profiles, detailed port traffic, personalized maps, and enhanced search tools may require a premium subscription. Subscriptions & In-App Purchases: Weekly — $4.99 Monthly — $12.99 Yearly — $39.99 Lifetime — $59.99 Subscriptions renew automatically unless canceled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription anytime in your device settings. Privacy Policy: https://docs.google.com/document/d/19HA5iTVvR-O93aqretn_GmX39cA8bqaFuBU6afc7_I0/edit?usp=sharing Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Underplane
Read full descriptionHide full description
Planes pass over you all day. Underplane tells you which ones — and exactly where to stand. It reads live flight data, projects each aircraft's track forward, and finds the ones heading your way. Most of the time you don't need to move at all: if a flight path already passes close to where you are, Underplane just tells you to stay put. WHEN ONE'S COMING • A countdown to the second it passes overhead • Callsign, altitude and speed, live on the map • Walking or driving directions on the rare occasions it's worth moving • A Live Activity on your lock screen, so you can put the phone away HOW CLOSE DID YOU GET Every catch is scored on how near the aircraft's path came to you: Good — within 1 km Great — within 500 m Excellent — within 100 m Perfect — within 10 m Standing in exactly the right place is the whole game. FOURTEEN ACHIEVEMENTS First Contact for your first plane. Wheels Down for one under 1,000 ft. Cruising Altitude for one above 30,000. Night Shift, Full Fleet, Bullseye — and Dead Reckoning, for five catches within ten metres. MAKE THE MAP YOURS Six map styles, all included: Monochrome, Standard, Traffic, Terrain, Satellite and Hybrid. Turn place labels on or off. Nothing here costs extra. SET YOUR OWN ODDS Choose how close a flight path has to come before Underplane calls it catchable — anywhere from 500 m to 15 km. Tight if you live under an approach, wide if planes are rare where you are. FREE AND PRO Catch three planes a week for free. Underplane Pro removes the cap and adds automatic alerts when something catchable is inbound, plus your full statistics and the people who stood under the same plane. Underplane needs your location to work out which aircraft are heading towards you and where to stand. It's used for nothing else. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Underplane at every 5 days against Boat Tracker +'s every 3 weeks. Boat Tracker +'s advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases 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. Boat Tracker + sells 5 in-app purchases, starting at $4.99 per 7 days and Underplane sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Boat Tracker + ships an update every 3 weeks, Underplane every 5 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.
| Parameter | Boat Tracker + | Underplane |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 106 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Angel Brown | David Sebbag |
In-app purchases
Boat Tracker +
- Weekly$4.997 Days
- Weekly-Trial3 Days trial$4.997 Days
- Monthly$12.991 Month
Show 1 moreShow fewer
- Yearly$39.991 Year
- Lifetime$59.99
Underplane
- Underplane Pro Monthly3 Days trial$5.991 Month
- Underplane Pro Yearly3 Days trial$44.991 Year









