A straightforward calculator app with a clean interface. It allows users to add simple notes to calculation results and easily copy or paste them from the history. This app is designed for quick and ad-free calculations.



211+ iOS apps curated and reviewed
Out of 211+ cheolchan um apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.4★ (14) | No | No | May 2026 | |
| 2 | Free | 4.7★ (1.7M) | Yes | Yes | Aug 2026 | |
| 3 | Free | 4.9★ (243K) | Yes | No | Aug 2026 | |
| 4 | Free | 4.9★ (404K) | Yes | No | Aug 2026 | |
| 5 | Free | 4.8★ (733K) | No | Yes | Aug 2026 | |
| 6 | Free | 4.5★ (7.5K) | No | Yes | Jul 2026 | |
| 7 | Free | 4.6★ (9.6K) | Yes | Yes | Aug 2026 | |
| 8 | Free | 4.7★ (60K) | No | No | Aug 2026 |



A straightforward calculator app with a clean interface. It allows users to add simple notes to calculation results and easily copy or paste them from the history. This app is designed for quick and ad-free calculations.






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.


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 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.


Scan any math problem to receive instant, step-by-step explanations and accurate solutions. This app breaks down complex problems into manageable steps, helping users understand the 'how' and 'why' of math. It supports a wide range of math topics, from basic arithmetic to advanced calculus.


This advanced calculator app offers comprehensive tools for high school and college students, covering everything from pre-algebra to calculus and statistics. It features high-resolution graphing, matrix operations, and detailed statistical analysis, all accessible through an intuitive interface.


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 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.


Solve math problems instantly by taking a photo or entering an equation. Get step-by-step solutions to understand the process and improve your math skills. Covers a wide range of topics from basic arithmetic to calculus.


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 powerful scientific calculator with a wide range of functions for trigonometry, statistics, and combinatorics. Users can define and evaluate their own functions, assign values to variables, and view multiple expressions simultaneously. It works offline and is completely free to use.


Solve math problems instantly with a powerful AI-driven calculator. Features include basic and scientific calculations, a photo math solver, and an AI homework helper for step-by-step explanations. Ideal for students and professionals needing quick, accurate math solutions.


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 disguises itself as a calculator to secretly store photos, videos, documents, notes, passwords, and more. It offers robust security features to protect your confidential information from prying eyes and hackers.


This app offers a smart calculator experience across iPad, iPhone, and Apple Watch. It features a history of calculations, the ability to edit equations, and a convenient dark mode. Easily share your results and enjoy enhanced productivity with its user-friendly interface.


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.


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.


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 provides instant, step-by-step solutions for a wide range of math problems, from basic arithmetic to calculus. Users can scan math problems with their camera and receive detailed explanations, multiple solving methods, and graphing tools. It's designed to help students understand and solve challenging math questions quickly.


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.