# Celestial Nav vs Nautical Rules

The clearest difference is rating: Nautical Rules at 5.0 against Celestial Nav's 4.3. Nautical Rules also leads on review sentiment (100% vs 64%) and in-app purchases (none vs 6). Celestial Nav's advantage is iOS requirement (15.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Celestial Nav sells 6 in-app purchases, starting at $1.99 per month. Nautical Rules asks for nothing beyond the download.

Nautical Rules holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 10 and 4 respectively. Written reviews point the same way: 64% of Celestial Nav's written reviews are positive against 100% of Nautical Rules's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Celestial Nav | Nautical Rules |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (10 ratings)](https://appshunter.io/ios/app/celestial-nav/id1569880598/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nautical-rules/id6756220989/reviews)** |
| Number of ratings | **10** | 4 |
| Positive reviews | 64.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Skytip LLC](https://appshunter.io/developer/1569880600) | [Joseph Kim](https://appshunter.io/developer/1855404156) |

## What reviewers say

### Celestial Nav

[App page](https://appshunter.io/ios/app/celestial-nav/id1569880598)

This app provides tools for celestial navigation, offering computations for celestial bodies and sight reductions. It includes an offline perpetual almanac and allows for quick capture of observation data for accurate course adjustments.

**Highlights:** Celestial navigational computations, Offline perpetual almanac, Quick celestial observation data capture, High accuracy sight reductions, Sight planning and reduction tools, Celestial fix computations

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version | $1.99 | per month |
| PRO Version | $7.99 | per 6 months |
| PRO Version | $9.99 | per year |
| 7 Day Trial License | $0.99 | one-time |
| 30 Day Trial License | $2.99 | one-time |
| PRO Version Lifetime | $24.99 | one-time |


### 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 Nav free?

Celestial Nav is free to download, with in-app purchases available.

### Is Nautical Rules free?

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

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

Nautical Rules is rated higher. Celestial Nav averages 4.3 out of 5 from 10 ratings, while Nautical Rules averages 5.0 from 4 ratings.

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

Neither Celestial Nav nor Nautical Rules shows ads.

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

Celestial Nav ships an update every 3 weeks, and Nautical Rules every 3 weeks. Most recently, Celestial Nav was updated on October 1, 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.*