---
title: "GPS Anti Spoof Pro — App Overview"
url: https://marlvel.ai/apps/com-clockwk-gps-anti-spoof-pro
category: Navigation
developer: Frank Reed
platforms: ios, android
rating: 3.6 (41 ratings)
pricing: free
report_level: overview
generated: 2026-04-23
last_verified: "2026-04-23T07:42:20.976Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app serves as a specialized, offline-capable tool for verifying GPS data through automated celestial navigation calculations.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Navigation |
| Rating | 3.6 ★ (41) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 1.0.39 |
| Latest Version (Android) | 1.0.39 |
| Developer | Frank Reed |

<!-- SECTION: Summary -->
## What is GPS Anti Spoof Pro?

GPS Anti Spoof Pro is a celestial navigation tool that validates GPS positioning by comparing observed celestial altitudes against live, high-precision calculations. It automates complex sight-clearing corrections, including gravitational deflection of the vertical, for maritime and land-based navigation. The Pro version supports offline functionality and an extensive database of celestial bodies.

<!-- SECTION: Key Features -->
## Key Features

- **Automated Sight-Clearing**: Calculates exact celestial altitudes without the need for manual tables or paperwork.
- **Comprehensive Correction Suite**: Automatically applies corrections for index error, refraction, dip, parallax, and gravitational deflection of the vertical.
- **Offline Navigation Database**: Supports the Sun, Moon, major planets, 57 navigational stars, and Polaris for weeks of use without network access.
- **GPS Validation**: Provides instant feedback on observed altitudes to verify the accuracy of current GPS positioning.

<!-- SECTION: Target Audience -->
## Who is it for?

Professional mariners and serious navigators requiring reliable, offline celestial navigation verification.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/gps-anti-spoof-pro/id1379926231?uo=2)
- [Google Play](https://play.google.com/store/apps/details?id=com.clockwk.GPSAntiSpoof&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/apps/com-clockwk-gps-anti-spoof-pro)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-clockwk-gps-anti-spoof-pro).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*