Nautical Calculator Pro vs CoNav
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Route calculation
- Point on Rhumb Line/Great Circle
- Celestial navigation
- Tidal calculations
- Wind calculation
- Nautical almanac
- World map visualization
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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
CoNav
This app provides essential tools for deck officers, including compass error calculation, celestial navigation, and ETA calculations. It offers offline functionality with precise algorithms for various maritime tasks, such as unit conversion and port information.
- Compass Error Calculation
- Celestial Navigation
- ETA Calculation
- Port UN LOCODE Database
- Units Converter
- True Wind Calculation
- Offline Functionality
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Deck Officer's Tools: - Compass Error Calculation - Celestial Navigation - E.T.A Calculation - Port UN LOCODE - Units Converter - True Wind Calculation The app runs offline and all calculations are done within the app using precise and sophisticated algorithms. Compass Error Calculation 64 Celestial Objects. Precise bearing and altitude. Automatic calculation of magnetic variation. Complete calculation according to all requirements. Suitable for all types of ship logs. Hiding celestial objects below the horizon is available. Celestial Navigation Three position lines for calculating the ship's position. A function is available for mapping the lines of position and the calculated position of the vessel. The sunrise and sunset function is available as well as Twilight Nautical and Twilight Civil. E.T.A Calculation High precision Great user interface Vessel speed adjustment function Port UN LOCODE 18,000 seaports Brief information on the seaport Units Converter 15 Dimensions Volume Length Angle Mass Temperature Speed Duration Area Power Pressure Frequency Energy Electric Resistance El. Potential Difference Electric Current This app will save you a lot of time and allow you to steer your boat even more safely. If you have questions or suggestions, please email yvvofficial@yahoo.com or on the Instagram page conav_.
Screenshots
Verdict
The clearest difference is rating: Nautical Calculator Pro at 5.0 against CoNav's 4.0. Nautical Calculator Pro also leads on device support (3 vs 1). CoNav's advantage is review sentiment (83% vs 60%) and update cadence (every 3 weeks vs every 2 months). On ratings volume, ads, in-app purchases and monetization model 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
Nautical Calculator Pro costs $8.99 and CoNav $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Nautical Calculator Pro holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 6 respectively. Written reviews complicate that: 60% of Nautical Calculator Pro's written reviews are positive against 83% of CoNav's, so the app with the better star average is not the one people write more warmly about.
Nautical Calculator Pro ships an update every 2 months, CoNav every 3 weeks. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.
| Parameter | Nautical Calculator Pro | CoNav |
|---|---|---|
| Price | $8.99 | $6.99 — better |
| Rating | 5.0 (3 ratings) — better | 4.0 (6 ratings) |
| Positive reviews | 60.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 3 | 6 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 27 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Giacomo Gabriele | Vladyslav Yarmak |
Customer experience
Nautical Calculator Pro
CoNav
In-app purchases
Nautical Calculator Pro
No in-app purchases
CoNav
No in-app purchases
Questions
Is Nautical Calculator Pro free?
Is CoNav free?
Which has better reviews, Nautical Calculator Pro or CoNav?
Do Nautical Calculator Pro or CoNav have ads?
Which is updated more often, Nautical Calculator Pro or CoNav?
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