250+ iOS apps curated and reviewed
Sextant Calculator is the household name in sextant calculator, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $1.00 | — | No | No | Aug 2026 |
| 2 |  | Free | 4.7★ (61K) | No | No | Sep 2026 |
| 3 |  | Free | 4.9★ (409K) | Yes | No | Sep 2026 |
| 4 |  | Free | — | No | No | May 2026 |
| 5 |  | Free | 2.0★ (3) | No | No | Aug 2026 |
| 6 |  | Free | 4.6★ (10K) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (579) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.5★ (126K) | Yes | Yes | Sep 2026 |
This tool simplifies celestial navigation calculations for sailors and students. It handles angle and time arithmetic, averages multiple sights, and features a specialized keypad. Offers day and night modes for usability at sea.
This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.
This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.
Simulate using a sextant to measure latitude by sighting the sun and horizon. Includes tools for calculating declination, local solar noon, and basic surveying.
This app assists with celestial navigation training by providing a perpetual almanac, star finder chart with animation, and tools for calculating lines of position and meridian passages. It can utilize device sensors for real-time chart positioning, though a marine sextant is still required for actual navigation.
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
This app offers a versatile calculator with both basic and scientific functions. It includes advanced features like currency and unit conversions, customizable themes, and history tracking. Optimized for both portrait and landscape modes, it's designed for users needing precise calculations and conversions.
This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.
This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.
Perform complex calculations with a natural input interface. This app offers instant results in both number and expression formats, supporting a wide range of mathematical functions. Enjoy a clean design with customizable options and offline availability.
A fast, clean, and easy-to-use calculator app offering both basic and advanced scientific functions. It features a minimal design, calculation history, and supports dark and light modes for a comfortable daily calculation experience.
This app offers a comprehensive calculator with both simple and advanced modes. It includes an equation solver with step-by-step explanations, calculation history, graphing capabilities, and table generation for multiple inputs. Supports a wide range of mathematical operators and functions.
This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.
This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.
Perform calculations quickly and accurately with large buttons. Personalize the interface by selecting custom background and text colors. This straightforward utility is designed for intuitive use.
This app offers a classic scientific calculator with both simple and engineering modes. It allows users to save calculations, customize the background with personal images, and preview expressions. It supports a range of Apple devices and includes dark/light modes.
A free, classic calculator app with large, easy-to-press buttons and customizable skins. It supports basic arithmetic, memory functions, and can handle very large numbers without using scientific notation. Multitasking is also supported on compatible devices.
This app offers a comprehensive suite of 15 calculators for everyday and scientific needs. Easily perform basic arithmetic, complex scientific functions, and specialized calculations like sales tax, age, and loan payments. It also includes a robust unit converter for various measurements.