--- title: "EZ Sextant — App Overview" url: https://marlvel.ai/apps/thirdreefsw-ezsextant category: Navigation developer: Third Reef Software LLC platforms: ios rating: 5.0 (4 ratings) pricing: paid report_level: overview generated: 2026-05-05 last_verified: "2026-05-09T01:56:27.668Z" --- > **Key Insight:** This app provides a digital, high-accuracy alternative to traditional manual celestial navigation methods for maritime redundancy. | Metric | Value | |--------|-------| | Category | Navigation | | Rating | 5.0 ★ (4) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 1.9 | | Developer | Third Reef Software LLC | ## What is EZ Sextant? EZ Sextant is a celestial navigation tool that enables users to determine their position in open waters without GPS. By utilizing the device's camera to sight celestial bodies like the sun, moon, and planets, the app generates lines of position and running fixes on a lat/lon grid. It serves as both a learning aid for traditional sextant use and a redundant navigation backup for mariners. ## Key Features - **Celestial Sightings**: Uses the device camera to capture sightings of the sun, moon, Venus, or Mars. - **Plotting Tools**: Calculates lines of position and combines multiple sightings into a running fix. - **Built-in Almanac**: Provides integrated data to support celestial calculations without external references. - **Position Display**: Visualizes estimated coordinates on a lat/lon grid. ## Who is it for? Professional mariners, passage makers, and sailing enthusiasts interested in celestial navigation. ## Links - [App Store](https://apps.apple.com/us/app/ez-sextant/id6477748851?uo=2) - [Full Intelligence Report](https://marlvel.ai/apps/thirdreefsw-ezsextant) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/thirdreefsw-ezsextant).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*