250+ iOS apps curated and reviewed
The best free calculator apps on iPhone average 4.6★ across 250+ 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 | 4.9★ (243K) | Yes | No | Aug 2026 |
| 2 |  | Free | 3.0★ (8.9K) | No | No | Aug 2026 |
| 3 |  | Free | 4.7★ (1.7M) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.2★ (1.4K) | No | No | Aug 2026 |
| 5 |  | Free | 4.9★ (409K) | Yes | No | Aug 2026 |
| 6 |  | Free | 4.7★ (15K) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (14K) | Yes | No | Aug 2026 |
| 8 |  | Free | 4.5★ (146K) | Yes | Yes | Aug 2026 |
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.
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 a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.
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 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.
A straightforward and intuitive calculator app designed for ease of use. It offers a history bar, customizable themes, and advanced mathematical functions, ensuring a pleasant and efficient calculation experience on your device.
A user-friendly calculator app featuring large buttons and customizable colorful backgrounds. It offers a dual-line display, multi-line input for complex equations, and convenient gesture controls for editing and copying.
This utility app offers a straightforward calculation experience with a vast selection of over 80 customizable themes. Personalize your calculator's appearance to suit your style while performing everyday math tasks.
This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.
This free calculator app offers a fast, ad-free experience with a visual input and calculation history. Customize your experience with various keyboard sounds and colors, and access advanced scientific functions when needed.
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.
A straightforward calculator app designed for everyday use. It offers a clean interface with essential functions, displaying current calculations and providing a history of your operations. Ideal for users who prefer simplicity over advanced features.
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 calculator app designed for everyday math, school, budgeting, and shopping. It offers essential functions, a clear interface with large buttons, and a history log for reviewing past calculations. Advanced features include memory functions, percentage calculations, and multi-window support for efficient workflow.
A straightforward calculator designed for speed and accuracy, mimicking classic pocket calculators. It offers real-world logic, business-focused calculations like cost, sell, and margin, and a clean interface for effortless use.
This app simplifies math with basic, scientific, and fraction calculations. It also features a unique snap-and-scribble function to solve problems from photos. Customize your experience with themes and access a calculation history.
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.
This app offers advanced calculation capabilities, including basic, scientific, and complex math functions. It features a history log to review, reuse, or share past calculations, all within a secure and user-friendly interface. Users can also customize themes and layouts.
This app offers a modern and intuitive calculator experience with advanced financial and scientific functions. It allows for natural calculation input, clear history browsing, and quick access to constants and functions.