# GPS Anti Spoof Pro vs Celestial Nav

The clearest difference is price: Celestial Nav at Free against GPS Anti Spoof Pro's $19.99. Celestial Nav also leads on update cadence (every 3 weeks vs every 5 months). GPS Anti Spoof Pro's advantage is rating (5.0 vs 4.3) and review sentiment (100% vs 60%). On ratings volume, ads and device support there is nothing between them.

Celestial Nav is free to download; GPS Anti Spoof Pro costs $19.99 up front. Celestial Nav sells 6 in-app purchases, starting at $1.99 per month. GPS Anti Spoof Pro asks for nothing beyond the download.

GPS Anti Spoof Pro holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 7 and 10 respectively. Written reviews point the same way: 100% of GPS Anti Spoof Pro's written reviews are positive against 60% of Celestial Nav's.

GPS Anti Spoof Pro ships an update every 5 months, Celestial Nav every 3 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | GPS Anti Spoof Pro | Celestial Nav |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/gps-anti-spoof-pro/id1379926231/reviews)** | [4.3 (10 ratings)](https://appshunter.io/ios/app/celestial-nav/id1569880598/reviews) |
| Number of ratings | 7 | **10** |
| Positive reviews | **100.0% of reviews** | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 12 MB | 20 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Frank Reed](https://appshunter.io/developer/1379926230) | [Skytip LLC](https://appshunter.io/developer/1569880600) |

## What reviewers say

### GPS Anti Spoof Pro

[App page](https://appshunter.io/ios/app/gps-anti-spoof-pro/id1379926231)

Instantly compare observed celestial navigation altitudes with calculated ones. This app helps mariners detect GPS spoofing and functions as a celestial navigation trainer. It automatically includes all necessary corrections for accurate readings.

**Highlights:** Celestial altitude comparison, GPS spoofing detection, Celestial navigation trainer, Automatic correction calculations, Offline functionality, Sun, Moon, planet, and star data

**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 GPS Anti Spoof Pro free?

GPS Anti Spoof Pro costs $19.99, with no in-app purchases.

### Is Celestial Nav free?

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

### Which has better reviews, GPS Anti Spoof Pro or Celestial Nav?

GPS Anti Spoof Pro is rated higher. GPS Anti Spoof Pro averages 5.0 out of 5 from 7 ratings, while Celestial Nav averages 4.3 from 10 ratings.

### Do GPS Anti Spoof Pro or Celestial Nav have ads?

Neither GPS Anti Spoof Pro nor Celestial Nav shows ads.

### Which is updated more often, GPS Anti Spoof Pro or Celestial Nav?

GPS Anti Spoof Pro ships an update every 5 months, and Celestial Nav every 3 weeks. Most recently, GPS Anti Spoof Pro was updated on October 26, 2026 and Celestial Nav on October 27, 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.*