249+ iOS apps curated and reviewed
The best lct50 calculator apps on iPhone average 4.1★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (6) | No | No | Aug 2026 |
| 2 |  | Free | 4.9★ (409K) | Yes | No | Aug 2026 |
| 3 |  | Free | 4.7★ (61K) | No | No | Aug 2026 |
| 4 |  | Free | 5.0★ (2) | No | No | May 2026 |
| 5 |  | Free | 4.6★ (194) | Yes | No | Aug 2026 |
| 6 |  | Free | 4.7★ (3.5K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.3★ (18) | Yes | No | May 2026 |
| 8 |  | Free | 3.0★ (1) | No | No | May 2026 |
Calculate LCT50 times for chemical agent deployment missions. Define room dimensions, set time limits or munitions, and select specific agents to ensure team safety and mission success.
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.
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.
A straightforward and user-friendly calculator designed for iPhone and iPad. It offers standard calculation logic, basic math operations, and a history display for convenience. Optimized for a simple and efficient user experience.
This app offers a straightforward and efficient calculation experience with a history log to review past computations. It supports multitasking and offers a dark mode for comfortable use.
A free, redesigned calculator app offering a simpler, more intuitive experience across Apple devices. Features include customizable themes, advanced scientific functions, and unit conversion, all optimized for various screen sizes and interactions.
A straightforward and user-friendly calculator designed for daily computations. It offers a clean interface for quick calculations on Apple devices.
A simple, neat, and brilliant calculator that displays entire calculations and answers at once. Personalize your experience by choosing your favorite color theme. Works on iPhone and iPod.
This app offers a comprehensive scientific calculator with advanced functions for math, finance, and engineering. It includes unit and currency conversion, a constants library, and a biorhythm calculator for daily insights. The interface is intuitive and supports multiple calculation modes.
A straightforward and visually appealing calculator designed for ease of use on iPads and other iOS devices. It offers a large keypad to prevent errors and operates silently, making it ideal for quiet environments.
This app redefines the calculator experience for touch-screen devices with a modern, intuitive design. It offers features like a tape log for storing calculations, formula evaluation, and iPad multitasking support for enhanced productivity.
A powerful and user-friendly scientific calculator for iPhone and iPad. It offers a classic mode in portrait and scientific functions in landscape, with customizable themes and copy-paste functionality for results and formulas.
Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.
A straightforward and reliable calculator application designed for iPad and iOS 9. It offers a standard calculation experience with a charming piano sound effect and is optimized for high-resolution screens.
This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.
This app offers a comprehensive scientific calculator with multiple modes, including algebraic, scientific, conversions, and logic calculations. It features a user-friendly design with large buttons and remembers your progress if interrupted.
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 both basic and scientific calculators for quick solutions to mathematical expressions. It also features a "Math Notes" function that allows users to type or write out equations and see them solved inline, with support for variables and graphing.
This app offers both standard and scientific calculator functions for your iPad or iPhone. It's designed for simplicity and ease of use, catering to both basic calculations and more complex mathematical needs.