# Nautical Rules vs Navigation Almanac

The clearest difference is update cadence: Navigation Almanac at weekly against Nautical Rules's every 3 weeks. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Nautical Rules against 5.0 for Navigation Almanac. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Nautical Rules ships an update every 3 weeks, Navigation Almanac weekly. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Nautical Rules | Navigation Almanac |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/nautical-rules/id6756220989/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/navigation-almanac/id6777455516/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 5 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Kim](https://appshunter.io/developer/1855404156) | [Vladyslav Zenchenko](https://appshunter.io/developer/6777455518) |

## What reviewers say

### Nautical Rules

[App page](https://appshunter.io/ios/app/nautical-rules/id6756220989)

Master USCG Navigation Rules with a comprehensive question bank and smart study features. Track your progress, practice for exams, and study offline to navigate with confidence.

**Highlights:** 1,200+ practice questions, Inland and International waters coverage, Detailed explanations, Customizable tests, Offline study capability, Progress tracking dashboard, Accuracy by rule statistics

**In-app purchases:** none


### Navigation Almanac

[App page](https://appshunter.io/ios/app/navigation-almanac/id6777455516)

This app provides a comprehensive offline celestial navigation toolkit. It calculates celestial body positions, sunrise/set times, and sky charts. It also offers tools for compass error correction and position fixing, all without requiring an internet connection.

**Highlights:** Offline celestial almanac data, Sight reduction calculations, Rise, set, and twilight times, Sky view chart and dome, Live GPS position and course, Compass error correction, Fix calculator

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

**In-app purchases:** none


## Frequently asked questions

### Is Nautical Rules free?

Nautical Rules is free to download, with no in-app purchases.

### Is Navigation Almanac free?

Navigation Almanac is free to download, with no in-app purchases.

### Which has better reviews, Nautical Rules or Navigation Almanac?

Nautical Rules and Navigation Almanac are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do Nautical Rules or Navigation Almanac have ads?

Neither Nautical Rules nor Navigation Almanac shows ads.

### Which is updated more often, Nautical Rules or Navigation Almanac?

Nautical Rules ships an update every 3 weeks, and Navigation Almanac weekly. Most recently, Nautical Rules was updated on October 6, 2026 and Navigation Almanac on October 17, 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.*