Calculator

PariDroid is a native port of PARI/GP to Android. PARI/GP is a widely used computer algebra system designed for fast computations in number theory (factorizations, algebraic number theory, elliptic curves...), but also contains a large number of other useful functions to compute with mathematical entities such as matrices, polynomials, power series, algebraic numbers, etc., and a lot of transcendental functions.

Qalculate! - the ultimate multi-purpose calculator - is now finally available on Android! It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation). Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation or interval arithmetic.

Very handy calculator, in Reverse Polish Notation style. Written in Kotlin. For every day use. Large digits with only the most used operators.

A simple, modern RPN calculator that uses RPN. Reverse Polish Notation is a system where the operators are entered _after_ the operands. For example, rather than 2 + 2, you would enter: 2 2 + The main benefit is a faster, more accurate interface.

This is a very early version in development. Unlabeled buttons will be implemented in the future, and bugs may be frequent. If you experience issues or have feature requests, please file an issue (link below). Frustrated by the lack of free, open-source scientific calculators that feel like the ones I am used to, I decided to reverse-engineer my old calculator from school. With features like: - input of complex equations, - output as fractions as well as decimals, - result storage and reuse, - selection and editing of equations from input history, - and support for implicit multiplication (like 5π instead of 5*π), this calculator produces math that looks like the math on your paper. That makes it much more suitable for higher-level math in school and university—especially if you've grown accustomed to this kind of interface from a young age and just forgot your calculator at home. Some additional features include: - A well-established open-source math.js library as the math engine—so you’re not relying on some sketchy, hand-rolled math logic (just my sketchy hand-rolled input method 😛) - A familiar, intuitive design - 100% offline usability and fully open source - Written entirely in HTML, JS, and CSS, which means: + inherently cross-platform and also available as a website and Flatpak + easy for other web developers to contribute + admittedly a bit heavy for a calculator. If you're interested in helping make a lighter version (Flutter, Kotlin, etc.), you're very welcome!

Units is a powerful unit-aware calculator that can perform a variety of unit conversions and also doubles as a simple scientific calculator. It's inspired by GNU Units. This edition is a continuation of Steve Pomeroy's original app. Usage Anything that is shown within a box can be entered into Units. E.g. m³÷hr. Place the value and the unit you want to convert from in the "you have" box (e.g. 4.9inches) and the unit you wish to convert to in the "you want" box (e.g. cm). To enter units, either press the "unit" button and select from the list, or tap on the input box a second time and an on-screen keyboard should pop up. You can enter simple units, such as cm / centimeter or complex units, such as m^3÷hr. You can long-press the "unit" button to show a list of all the units. If you don't specify a "to" unit, it will provide a definition in base units. For a list of examples and more information, please see the built-in help or the Readme on Github.

Calculator, converter and more. Look for Calculator on your home screen after installing the app. Calculator • Home screen widget • Copy, paste, save and share expression results • Trigonometric functions • Fractional output • Optional Indian numbering system Unit converter • 601 units • Currency converter (uses internet) • Home screen widget • Favorite units • Organize unit groups • Smart search algorithm Date calculator • Add and subtract dates • Calculate difference • Create events in calendar Time converter • Add to favorites • Add labels to time zones Body mass index • Get instant and accurate results Permissions and Data? Visit: https://github.com/sadellie/unitto/security/ Try web: https://sadellie.github.com/unitto/app

Scientific calculator for complex math expressions with support for graph drawing. In the first tab, user can write math expressions and get the results. A list of previous expressions is available and they can be retrieved, edited, supressed... The second tab shows graphs of functions that are selected in the first tab. The last tab shows a list of physic constants that can be send to letters used in math expressions.

WriteOn is a note-taking app designed with simplicity and usability at its core — perfect for students and everyday use. 🛠️ Key Features: • ☁️ Backup & Restore notes (offline & WebDAV supported) • 👁️ Screen protection (prevents screenshots & previews) • 🖋️ Markdown support for rich text formatting • 🎨 Customizable themes for light/dark comfort • 📶 Works both offline and online • 🔒 Privacy-respecting – no access to your personal data • 📝 Export notes to .txt format and more • 📷 Attach and view images inside notes • 📅 Built-in calendar for instant checking • 📌 Pin notes to your notification panel (requires notification permission) • 🌈 Visually calming and intuitive interface • 🧮 Built-in calculator for easy access • 🎓 Flashcard mode for studying and others This app is a fork of Easynotes. Updates and new features are driven by user feedbacks. With more improvements coming soon.

dahliaOS Calculator is a system app for dahliaOS and a basic arithmetic calculator. It supports the basic four operations, as well as pi, the number e, sin/cos/tan, and more.

With microMathematics Plus, you can not only perform mathematical calculations in naturally readable form, but can also create and manage your own collection of interactive formulas! The microMathematics Plus is a revolutionary new kind of mobile calculator. It is the world’s first scientific graphing calculator and function plotter on Android oriented around a worksheet. It allows live editing of mathematical identities combined with highly accurate computations. The app is 100% open source. Please feel free to download, explore, fork or contribute to it on https://github.com/mkulesh/microMathematics Not only students, but also everybody who likes mathematics or needs more than just a basic calculator will benefit from this amazing technique of mathematical calculations and plotting. Benefits and features: * Maximum privacy: No ads, no trackers, no telemetry, no special permissions * The modern Material design supports different color themes and works on smartphones and/or tablets in portrait and landscape mode * Verification, validation, documentation and re-use of mathematical calculations * Works on smartphone or tablet in portrait and landscape mode * Supports all commonly used mathematical operations * Mathematical expressions are written in an intuitive and naturally readable form * Supports SI and non-SI units (including units of information) * Powerful mathematical touch-screen editor with undo function makes editing easier * You can do multiple calculations and subsequently correct or change all used formulas * It is possible to store intermediate results into 1D, 2D, or 3D array that can improve calculation performance * Mathematical expressions are collected in a document, that includes not only formulas and plots, but also additional text and images (SVG format is also supported) * You can store your document on SD card and export it into LaTeX format or an image (SD writing permission is needed) * SD card on Android 6+ is also supported * The app contains detailed "How to use" page and several examples * Supports data import from ASCII files * Supports units of measurements, arrays, complex numbers, functions of many arguments, plots for several functions, contour and 3D plots, summation and product operations, derivative and definite integrals, if-function and logical operators, Fourier transform, root finding. This version has following mathematical limitations: it does not support special functions, vectors, matrices and many other things from high-level mathematics. Languages: English, Russian, German, Brazilian Portuguese, Chinese, Spanish

Calculator with basic and scientific calculation features, a unit converter and a programmer mode. It's design is inspired by Google's Calculator and tries to address its flaws. v2 of yetCalc comes with the following features: - Redesigned Calculator with scientific mode in both Portrait and Landscape mode - Customizable Unit Converter with selectable unit groups, unit pins, search and much more... - Fully Redesigned Programmer mode with new operators and functions. - Selectable starting mode. - Shortcuts for home screen with themed icons support. - New and Improved Settings providing endless customizability. - New Abyss mode (AMOLED Dark) for those wanting to preserve battery life. - Material You Support or Dynamic Colors, with 4 unique styles to serve your needs. Features: - Progressive Calculations - Scientific Mode with trigonometric, hyperbolic and inverse functions, calculus and iterated operators, much more. - Unit Converter - Programmer Mode with number systems and logical operations. NOTE: Internet connection is used for currency conversions and nothing else.