# Marine Navigation vs Nautical Calculator Pro

The clearest difference is review sentiment: Nautical Calculator Pro at 100% against Marine Navigation's 30%. Nautical Calculator Pro also leads on price ($14.99 vs $19.99). Marine Navigation's advantage is ads (none vs shown) and update cadence (weekly vs fortnightly). On in-app purchases, device support and iOS requirement there is nothing between them.

Marine Navigation costs $19.99 and Nautical Calculator Pro $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Marine Navigation ships an update weekly, Nautical Calculator Pro fortnightly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Marine Navigation | Nautical Calculator Pro |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nautical-calculator-pro/id1532372625/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 29.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 107 MB | 67 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Marco Palaferri](https://appshunter.io/developer/395030821) | [The Vu Cong](https://appshunter.io/developer/1532372627) |

## What reviewers say

### Marine Navigation

[App page](https://appshunter.io/ios/app/marine-navigation/id528948720)

This app offers a one-time purchase offline GPS chartplotter, giving you lifetime ownership of your maps without subscriptions or data tracking. It provides reliable navigation for sailors and fishermen, with an optional PRO subscription for advanced features.

**Highlights:** Offline GPS chartplotter, One-time purchase, own forever, Proprietary S57 engine, Unlimited custom maps, Global offline tides, Fish forecast

**Features:** Vision Pro support

**In-app purchases:** none


### Nautical Calculator Pro

[App page](https://appshunter.io/ios/app/nautical-calculator-pro/id1532372625)

This app assists with critical marine navigation and maneuvering calculations. It offers tools for route planning, collision avoidance, and understanding international maritime regulations. Features include real-time ship movement, GPS, and a glossary of marine terms.

**Highlights:** Real-time ship movement, Route planning, Collision avoidance calculations, Nautical Almanac, COLREG rules, Unit conversion, Offline GPS

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Marine Navigation free?

Marine Navigation costs $19.99, with no in-app purchases.

### Is Nautical Calculator Pro free?

Nautical Calculator Pro costs $14.99, with no in-app purchases.

### Do Marine Navigation or Nautical Calculator Pro have ads?

Nautical Calculator Pro shows ads; Marine Navigation does not.

### Which is updated more often, Marine Navigation or Nautical Calculator Pro?

Marine Navigation ships an update weekly, and Nautical Calculator Pro fortnightly. Most recently, Marine Navigation was updated on November 1, 2026 and Nautical Calculator Pro on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*