# Celestial Navigator vs Nautical Rules

The clearest difference is review sentiment: Nautical Rules at 100% against Celestial Navigator's 43%. Nautical Rules also leads on rating (5.0 vs 2.0) and update cadence (every 3 weeks vs every 9 months). Celestial Navigator's advantage is iOS requirement (11.0 vs 17.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Nautical Rules holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews point the same way: 43% of Celestial Navigator's written reviews are positive against 100% of Nautical Rules's.

Celestial Navigator ships an update every 9 months, Nautical Rules every 3 weeks. The most recent releases landed on September 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Celestial Navigator | Nautical Rules |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/celestial-navigator/id696927722/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nautical-rules/id6756220989/reviews)** |
| Number of ratings | 3 | **4** |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 32 MB | 5 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Omar reis](https://appshunter.io/developer/687921629) | [Joseph Kim](https://appshunter.io/developer/1855404156) |

## What reviewers say

### Celestial Navigator

[App page](https://appshunter.io/ios/app/celestial-navigator/id696927722)

This app assists with celestial navigation training by providing a perpetual almanac, star finder chart with animation, and tools for calculating lines of position and meridian passages. It can utilize device sensors for real-time chart positioning, though a marine sextant is still required for actual navigation.

**Highlights:** Perpetual almanac, Animated star finder chart, Line of position calculation, Meridian passage calculation, Real-time sensor integration, Celestial object data

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Celestial Navigator free?

Celestial Navigator is free to download, with no in-app purchases.

### Is Nautical Rules free?

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

### Which has better reviews, Celestial Navigator or Nautical Rules?

Nautical Rules is rated higher. Celestial Navigator averages 2.0 out of 5 from 3 ratings, while Nautical Rules averages 5.0 from 4 ratings.

### Do Celestial Navigator or Nautical Rules have ads?

Neither Celestial Navigator nor Nautical Rules shows ads.

### Which is updated more often, Celestial Navigator or Nautical Rules?

Celestial Navigator ships an update every 9 months, and Nautical Rules every 3 weeks. Most recently, Celestial Navigator was updated on September 25, 2026 and Nautical Rules on October 6, 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.*