Comparison

Nautical Calculator Pro vs EGK BTSkyTrain Map

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Nautical Calculator Pro

This app provides comprehensive tools for solving complex nautical navigation calculations, including route planning, celestial navigation, and tidal predictions. It features a world map for route visualization and offline functionality for map display.

Highlights
  • Route calculation
  • Point on Rhumb Line/Great Circle
  • Celestial navigation
  • Tidal calculations
  • Wind calculation
  • Nautical almanac
  • World map visualization
Features
Read full description

Nautical Calculator Pro is the most complete application that solves the navigation calculations The main features are : - Calculate Route (solves 2nd navigation problem) - Calculate point on Rhumb Line (solves 1st navigation problem) - Calculate point on Great Circle (solves 1st navigation problem) - Calculate point on WGS84 (solves 1st navigation problem) - Calculate Average speed - E.T.A. calculation - Route plan, for manual waypoints planning - Waypoint route - Compisite sailing with parallel limit - Rhumb Line Parallel/Meridian intersection - Follow on same Rhumb Line route - Opposite course rendez vous - Route correction - Calculate Amplitude at sunset and sunrise and magnetic compass deviation - Compass detections - Solves Drift problem - Solves Tides problem - Solves Tidal current problem - Wind calculation with Beaufort classification - ABC Tables (azimuth, initial course, right ascension with unknow star) - Nautical almanac - Celestial Navigation with position line - Meridian transit - Celestial observation - Coastal navigation - Wheel Over - Draft survey - Converter - Anchorage - Interpolation In routes feature there is a world map: it isn't a nautical chart and is not for use as a saling chart, but as a simple general means of showing the courses through the water on earth, this map isn't for navigational purposes. No need connection for show the map; the map will be downloaded only one time. The map, for size limit, will be show for scale over 60-70 Nm. follow on facebook https://www.facebook.com/NauticalCalculator

About

EGK BTSkyTrain Map

Features
Read full description

The EGK BTSkyTrain Map is your essential guide to navigating the Bangkok Mass Transit System. Designed with a clean, intuitive interface, this app provides a comprehensive and easy-to-use map of the Sukhumvit, Silom, and Gold Lines, as well as integrated information for key MRT Blue Line transfer stations Key Features: Intelligent Route Planner: Effortlessly find the most efficient route between any two stations. Simply select your starting and ending points, and the app will provide a clear, step-by-step path, including any necessary line transfers. The powerful routing algorithm ensures you get to your destination quickly and with minimal hassle. Interactive Schematic Map: Our beautifully designed, scalable map simplifies the complex network of Bangkok's rail lines. Zoom in and out to see station details, line connections, and the overall network layout. The map is built to be a visual and functional representation of the system, making it easy to understand even for first-time visitors. Live Location-Based Services: Using your device's location, the app automatically identifies the five closest BTS or MRT stations to you. This feature is perfect for when you're on the go and need to quickly find the nearest station entrance, saving you time and guesswork. Detailed Station Information: Tap on any station to view its code, line, and transfer options. All data is locally stored within the app, ensuring that you can find routes and information even without an internet connection. Whether you're a local commuter or a tourist exploring the city, the EGK BTSkyTrain Map app makes navigating Bangkok's public transport system a stress-free experience. Download now and start your journey with confidence.

Screenshots

Nautical Calculator Pro4 screens
EGK BTSkyTrain Map4 screens

Verdict

The call

The clearest difference is price: EGK BTSkyTrain Map at Free against Nautical Calculator Pro's $8.99. EGK BTSkyTrain Map also leads on update cadence (every 3 weeks vs every 2 months). Nautical Calculator Pro's advantage is iOS requirement (15.0 vs 18.5). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

EGK BTSkyTrain Map is free to download; Nautical Calculator Pro costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Nautical Calculator Pro ships an update every 2 months, EGK BTSkyTrain Map every 3 weeks. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

Scorecard3 real differences · 7 level
Nautical Calculator Pro versus EGK BTSkyTrain Map: the parameters behind the verdict, then further details
ParameterNautical Calculator ProEGK BTSkyTrain Map
Price$8.99Free — better
Rating5.0 (3 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.5
Further details — not scored
Size27 MB5 MB
Age rating4+4+
DeveloperGiacomo GabrieleIsaac Eng Gian Khor

In-app purchases

None

Nautical Calculator Pro

No in-app purchases

None

EGK BTSkyTrain Map

No in-app purchases

Questions

Is Nautical Calculator Pro free?
Nautical Calculator Pro costs $8.99, with no in-app purchases.
Is EGK BTSkyTrain Map free?
EGK BTSkyTrain Map is free to download, with no in-app purchases.
Do Nautical Calculator Pro or EGK BTSkyTrain Map have ads?
Neither Nautical Calculator Pro nor EGK BTSkyTrain Map shows ads.
Which is updated more often, Nautical Calculator Pro or EGK BTSkyTrain Map?
Nautical Calculator Pro ships an update every 2 months, and EGK BTSkyTrain Map every 3 weeks. Most recently, Nautical Calculator Pro was updated on September 17, 2026 and EGK BTSkyTrain Map on September 13, 2026.

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