# Nautical Calculator Pro

> Advanced nautical navigation calculator for route planning and celestial calculations. (iPhone/iPad app by Giacomo Gabriele.)

- Source: https://appshunter.io/ios/app/nautical-calculator-pro/id1455851003 (this page in markdown: same URL + `.md`)
- Developer: [Giacomo Gabriele](https://appshunter.io/developer/1455745031)
- Category: Navigation, Productivity
- Price: $8.99
- Rating: 5.00/5 from 3 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 27 MB
- Languages: American English
- Released: 2019-03-28
- Data updated: 2026-09-03
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/nautical-calculator-pro/id1455851003/reviews.md

## What is Nautical Calculator Pro?

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

## Key features

- Route calculation
- Point on Rhumb Line/Great Circle
- Celestial navigation
- Tidal calculations
- Wind calculation
- Nautical almanac
- World map visualization

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/nautical-calculator-pro/id1455851003/reviews.md

### 5/5 — Works well

*2024-04-14*

I haven’t used all of the functions, but so far it works well for doing azimuths/aplitudes, star fixes, sun lines, and getting true wind direction. For the price it has been worth it for me.

### 3/5 — Good

*2021-10-21*

Good but needs some deployments
The app is failing to generate report in PDF  format on iPhone 12 pro max

### 1/5 — Save your money

*2021-09-04*

Unfortunately this is a home made app with a barely usable interface. The idea is nice but the cost of purchase is simply not worth it. If it was free I would consider it but since I paid I can only regret having done so.

### 4/5 — Numeric keypad.

*2021-05-25*

Please add a dot symbol on the numeric keypad.

**Developer response:** Problem fixed on the version 3.0

### 5/5 — nautical calculator pro

*2019-05-07*

The best I‘ve seen ever!!!!!

**Developer response:** thanks

## Frequently asked questions about Nautical Calculator Pro

### What are the primary navigation calculations Nautical Calculator Pro can perform?

Nautical Calculator Pro excels at solving the 2nd navigation problem (route calculation) and the 1st navigation problem (calculating a point on Rhumb Line or Great Circle). It also handles WGS84 calculations and average speed computations.

### Does Nautical Calculator Pro offer features for celestial navigation?

Yes, it includes extensive celestial navigation capabilities, such as calculating amplitude at sunset and sunrise, magnetic compass deviation, and performing celestial observations with position lines. It also features a nautical almanac and ABC Tables for star calculations.

### Can Nautical Calculator Pro assist with tidal and wind calculations?

Absolutely. The app can solve drift problems, tides, and tidal current problems. It also includes wind calculation with Beaufort classification.

### Is a constant internet connection required to use Nautical Calculator Pro?

No, a connection is not needed to show the map, which is downloaded only once. The app is designed to function offline for map display and calculations, making it reliable at sea.

### What is the price of Nautical Calculator Pro?

Nautical Calculator Pro is available for a one-time purchase of $8.99.

### On which devices can I use Nautical Calculator Pro?

Nautical Calculator Pro is compatible with iPhone, iPad, and iPod touch devices.

### How often is Nautical Calculator Pro updated?

The latest version, 12.1.0, was last updated on September 10, 2025, indicating regular updates to enhance functionality and reliability.

### Does Nautical Calculator Pro have ads?

No, Nautical Calculator Pro does not contain advertisements, providing an uninterrupted user experience.

## Version history (last 5 releases)

### 13.0.4 — 2026-06-11

Many bugs fixed

### 13.0.2 — 2026-04-17

v13.0.2
- Added GPX file import/export functionality
- Fixed various calculation bugs
- Various updates
- Fixed coastal navigation crash
- Fixed UI bugs

### 13.0.0 — 2026-04-13

v13.0.0
- Added GPX file import/export functionality
- Fixed various calculation bugs
- Various updates
- Fixed coastal navigation crash

### 12.1.0 — 2025-09-10

v12.1.0
- Fixed pdf export for "Nautical Almanac"
- Increased precision for magnetic-variation
- Fixed UI toolbar

### 12.0.0 — 2025-03-31

Upgrade

## Apps similar to Nautical Calculator Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Wärtsilä iSailor](https://appshunter.io/ios/app/wartsila-isailor/id398456162) | 3.1 (11) | Free | Navigation |
| [CVoyager](https://appshunter.io/ios/app/cvoyager/id6502268141) | 3.5 (6) | Free | Navigation |
| [CoNav](https://appshunter.io/ios/app/conav/id1456729642) | 4.0 (6) | $6.99 | Navigation |
| [Navily](https://appshunter.io/ios/app/navily/id881103205) | 4.8 (813) | Free | Navigation |
| [B&G: Companion App for Sailors](https://appshunter.io/ios/app/b-and-g-companion-app-for-sailors/id1477846822) | 4.0 (374) | Free | Navigation |
| [AIS Maps: Marine & Lake charts](https://appshunter.io/ios/app/ais-maps-marine-and-lake-charts/id530051486) | 3.7 (32) | Free | Navigation |

## More apps by Giacomo Gabriele

- [Radar Plotting](https://appshunter.io/ios/app/radar-plotting/id1470598201)

All apps by Giacomo Gabriele: https://appshunter.io/developer/1455745031

## Related topics

[almanac nautical](https://appshunter.io/ios/topics/almanac-nautical) · [perpetual nautical almanac](https://appshunter.io/ios/topics/perpetual-nautical-almanac)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*