Navigate open waters using your phone's camera to sight celestial bodies. This app plots lines of position and combines them for an estimated location on a lat/lon grid. It's a powerful tool for offshore navigation without relying on GPS.






9+ iOS apps curated and reviewed
Looking for free ez sextant apps? 2 of our 9+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $24.99 | 5.0★ (4) | No | No | Aug 2026 | ||
| 2 | $29.99 | 4.9★ (26) | No | No | Sep 2026 | ||
| 3 | $9.99 | 5.0★ (5) | No | No | Aug 2026 | ||
| 4 | $24.99 | 5.0★ (1) | No | No | Sep 2026 | ||
| 5 | $9.99 | — | No | No | Jun 2026 | ||
| 6 | Free | 4.9★ (8) | No | No | Aug 2026 | ||
| 7 | Free | 5.0★ (3) | No | No | Aug 2026 | ||
| 8 | $1.99 | 4.2★ (15) | No | No | Aug 2026 |






Navigate open waters using your phone's camera to sight celestial bodies. This app plots lines of position and combines them for an estimated location on a lat/lon grid. It's a powerful tool for offshore navigation without relying on GPS.






This app simplifies celestial navigation using a sextant, providing tools to calculate your position at sea. It offers automated calculations or manual table access, with features for observation archiving and compass checks. Ideal for learning and practicing traditional navigation methods.






Access 100 years of nautical almanac data digitally, from 1960 to 2059. This app offers enhanced navigation features like instant page access, highlighting, and zoom, supporting celestial navigation activities offline.