# Nautical Calculator vs EZ Celestial Navigation

The clearest difference is price: Nautical Calculator at $8.99 against EZ Celestial Navigation's $29.99. Nautical Calculator also leads on iOS requirement (9.1 vs 13.0). EZ Celestial Navigation's advantage is update cadence (monthly vs every 9 months) and chart position (#180 vs unranked). On rating, ads, in-app purchases and monetization model there is nothing between them.

Nautical Calculator costs $8.99 and EZ Celestial Navigation $29.99 up front. 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 Calculator against 4.9 for EZ Celestial Navigation. That said, the two scores are not equally well evidenced: EZ Celestial Navigation has 26 ratings behind it against 4, so its average is the more settled of the two.

Nautical Calculator ships an update every 9 months, EZ Celestial Navigation monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Nautical Calculator | EZ Celestial Navigation |
| --- | --- | --- |
| Price | **$8.99** | $29.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nautical-calculator/id1221203637/reviews)** | [4.9 (26 ratings)](https://appshunter.io/ios/app/ez-celestial-navigation/id1547239240/reviews) |
| Number of ratings | 4 | **26** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#180** |
| Size | 11 MB | 153 MB |
| Requires iOS | **9.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aviation Mobile Apps, LLC.](https://appshunter.io/developer/286046308) | [EZ Celestial LLC](https://appshunter.io/developer/504153123) |

## What reviewers say

### Nautical Calculator

[App page](https://appshunter.io/ios/app/nautical-calculator/id1221203637)

This app provides a comprehensive suite of tools for marine navigation, including celestial, distance, and conversion calculators. It offers over 35 nautical calculations and reference materials, including "The American Practical Navigator."

**Highlights:** Celestial Navigation Calculators, Conversions Calculators, Distance Calculators, Log and Trig Calculators, Sailings Calculators, Weather Data Calculators, Reference Documents

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

**In-app purchases:** none


### EZ Celestial Navigation

[App page](https://appshunter.io/ios/app/ez-celestial-navigation/id1547239240)

**Currently charting:** #180 Top Paid · Navigation (US App Store)

This app simplifies celestial navigation using a sextant, providing tools to calculate your position at sea. It offers automated calculations or manual table access, with features for observation archiving and compass checks. Ideal for learning and practicing traditional navigation methods.

**Highlights:** Automated sight reduction and LOP plotting, Manual Nautical Almanac and Pub. 229 table access, Observation archiving and restoration, Compass check functionality, Printable Nautical Almanac pages and reports, Universal app for iOS and macOS

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

**In-app purchases:** none


## Frequently asked questions

### Is Nautical Calculator free?

Nautical Calculator costs $8.99, with no in-app purchases.

### Is EZ Celestial Navigation free?

EZ Celestial Navigation costs $29.99, with no in-app purchases.

### Which has better reviews, Nautical Calculator or EZ Celestial Navigation?

Nautical Calculator is rated higher. Nautical Calculator averages 5.0 out of 5 from 4 ratings, while EZ Celestial Navigation averages 4.9 from 26 ratings.

### Do Nautical Calculator or EZ Celestial Navigation have ads?

Neither Nautical Calculator nor EZ Celestial Navigation shows ads.

### Which is updated more often, Nautical Calculator or EZ Celestial Navigation?

Nautical Calculator ships an update every 9 months, and EZ Celestial Navigation monthly. Most recently, Nautical Calculator was updated on October 24, 2026 and EZ Celestial Navigation on October 25, 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.*