# GPS Anti Spoof

> Validate GPS position with easy comparison to sextant altitudes

Canonical page: [https://chrome-stats.com/d/com.clockwk.GPSAntiSpoof](https://chrome-stats.com/d/com.clockwk.GPSAntiSpoof)

## Overview

- **ID:** `com.clockwk.GPSAntiSpoof`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Clockwork Mapping
- **Category:** MAPS\_AND\_NAVIGATION
- **Downloads:** 7,400
- **Rating:** 3.57 / 5 (40 ratings)
- **Version:** 1.41
- **Last updated:** 2026-08-21
- **First published:** 2017-12-02
- **Publisher country:** US
- **Size:** 16 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.clockwk.GPSAntiSpoof)
- **Website:** [http://clockwk.com](http://clockwk.com/)
- **Privacy policy:** [https://clockwk.com/apps-privacy-policy.html](https://clockwk.com/apps-privacy-policy.html)

## Description

"GPS Anti Spoof" is an Android app designed for sailors and navigators to detect GPS spoofing by comparing GPS positions with calculated altitudes of celestial bodies. Using a sextant, the app provides instant celestial navigation and includes automatic corrections for various factors. It works offline, and can download temperature and pressure data when connected, ensuring accurate altitude calculations. All ephemeris data is sourced from JPL, guaranteeing precision for effective navigation.

## Rankings

- #625,495 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.INTERNET`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.clockwk.GPSAntiSpoof)