# Nautical Calculator vs Celestial Nav

The clearest difference is price: Celestial Nav at Free against Nautical Calculator's $8.99. Celestial Nav also leads on update cadence (every 3 weeks vs every 9 months). Nautical Calculator's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 6). On ratings volume, ads and device support there is nothing between them.

Celestial Nav is free to download; Nautical Calculator costs $8.99 up front. Celestial Nav sells 6 in-app purchases, starting at $1.99 per month. Nautical Calculator asks for nothing beyond the download.

Nautical Calculator holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 10 respectively.

Nautical Calculator ships an update every 9 months, Celestial Nav every 3 weeks. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Nautical Calculator | Celestial Nav |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nautical-calculator/id1221203637/reviews)** | [4.3 (10 ratings)](https://appshunter.io/ios/app/celestial-nav/id1569880598/reviews) |
| Number of ratings | 4 | **10** |
| Positive reviews | — | 64.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 11 MB | 20 MB |
| Requires iOS | **9.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aviation Mobile Apps, LLC.](https://appshunter.io/developer/286046308) | [Skytip LLC](https://appshunter.io/developer/1569880600) |

## 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


### 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 |


## Frequently asked questions

### Is Nautical Calculator free?

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

### Is Celestial Nav free?

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

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

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

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

Neither Nautical Calculator nor Celestial Nav shows ads.

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

Nautical Calculator ships an update every 9 months, and Celestial Nav every 3 weeks. Most recently, Nautical Calculator was updated on October 9, 2026 and Celestial Nav 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.*