Open Source Android Calculators
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Calculators for Android
View 24910 business solutionsBrowse free open source Calculators and projects for Android below. Use the toggles on the left to filter open source Calculators by OS, license, language, programming language, and project status.
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Multi-Calculator
Stylish design, versatile features – the ultimate calculator
Multi-Calculator is a free, open-source Android utility application that combines mathematical calculations and everyday conversion tools. It provides a scientific calculator supporting arithmetic, logarithms, trigonometry, factorials, and mathematical constants. Users can convert measurements across categories such as length, area, volume, temperature, and speed. The application includes financial calculators for loans, investments, deposits, and taxes. Additional utilities cover date calculations, currency exchange, body mass index, statistics, and equation solving. It also provides a compass, random number generator, shopping assistant, and on-screen ruler. Built with Material Design 3, Multi-Calculator supports calculation history, floating windows, and home screen widgets. Its lightweight interface is available in several languages. -
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Advanced Trigonometry Calculator
Open-source C/C++ math engine for advanced scientific computing
Advanced Trigonometry Calculator (ATC) is an open-source mathematical computing engine written mainly in C/C++. Created in 2011 and maintained by Renato Alexandre dos Santos Freitas, ATC is designed as a practical Windows desktop application for advanced calculations, automation, and technical problem solving. ATC supports equation solving, polynomial tools, complex numbers, matrix calculations, statistics, physics, geometry, unit conversions, DSP/FFT operations, and scripting. It can also process batch TXT files, making it useful for repeatable calculations and automated workflows. The project also includes ATC Online Alpha, a WebAssembly-based version that brings parts of the ATC engine to the web. ATC is released under the GPLv3 license and is made in Portugal. -
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Converter NOW
The Unit Converter app: easy, immediate and multi-platform
Converter NOW is a free, open-source unit conversion application designed for fast and convenient measurements across multiple categories. It provides instant conversions as users type, eliminating the need for manual calculation steps. The software supports numerous measurement units and currency conversions using exchange rates updated daily. Users can reorganize units according to their preferences and quickly access commonly used measurements. A built-in calculator allows mathematical operations without switching applications. Its customizable interface includes accent colors and light and dark themes. Developed with Flutter, Converter NOW is available for Android, Windows, Linux, and web browsers. The application emphasizes privacy by avoiding advertisements, unnecessary permissions, and personal data collection. -
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Simple Calculator
A calculator for quick simple calculations with a nice user interface
This stylish modern calculator offers a great user experience that you will love seeing. You can copy the result or formula to the clipboard by long-pressing it. You can also use this calculator as a currency converter to calculate your daily income and other amounts in different countries' currencies. With eye soothing dark theme, it is now easy for you to see buttons and numbers more easily and use this calculator for simple calculations or use it as a currency converter, or as a calculator and graphing calculator. You can also use this math calculator as a mortgage calculator. The app is a simple helper for fast calculations with many basic functions including multiplying, dividing, rooting, and powers. It also comes with a dark theme so that you can use this new technology to make your calculator look smoother and easier to use rather than using sharp colors provided in different calculators that can't help you concentrate on your complex calculations in this graphing calculator. -
Endpoint Management with Remote Control Built InSplashtop AEM handles patching, alerts, scripts, and inventory, and unattended remote control is included. When something needs hands-on work, you’re one click away instead of switching tools.
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PeCalc
PeCalc is a polyvalent engineering calculator for S&T students
PeCalc allows making calculations with integer fractions, complex numbers, complex matrices, rational functions and complex polynomials. It also allows making changes of numeric base, prime factor decomposition, solving linear equation systems, statistical and financial computations, rational fraction decomposition and plotting some control engineering graphs. PeCalc includes comprehensive user help in English and Spanish. Currently PeCalc runs on Android and MS Windows. A version for GNU Linux is planned for the near future. It has been developed in Object Pascal using Embarcadero Delphi. A Lazarus/Free Pascal version will be available soon too. -
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Insulin IP Calc
Insulin infusion protocol calculator
A simple, point of care, clinic decision support system (CDSS) Android app for Insulin infusion and hyperglycemia management in the ICU. The infusion protocol calculator is based on the updated "Yale Insulin Infusion Protocol" http://bit.ly/1DaVfUd and American Association of Clinical Endocrinologists (AACE) blood sugar targets. http://inpatient.aace.com/ . Source code requires Xamarin Studio & Android SDK to compile. -
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"A basic numerology calculator in JavaScript" A live demo is available at: https://pythagorean-numerology-calc.sourceforge.io/pnc.html Features: -Your connection with the 4 classic elements -Numerology chart calculation -Master numbers detection -Psychologic matrix chart calculator -Name calculation chart -Personal day calendar -Plain calculator for names or numbers -Name diagrams (Norman Shine) -Profiles manager -Unlimited number of profiles -Search and sort feature to find profiles easily -Small help section -Ability to save/export calculations, profiles, and charts -Runs offline as well as online
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HCalculator
HCalculator - Professional Hydraulic Calculator
PROFESSIONAL HYDRAULIC CALCULATIONS A reliable engineering application created for designers, mechanics, and machine technicians. Perform precise technical calculations instantly, completely securely, and without ads. -
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Calendar Calc v2.0
Date utilities for any calendar task
CalendarCalc represents a significant leap forward in digital time management and chronological calculation tools, offering a refined and powerful user experience directly on your Windows desktop. Designed to bridge the gaps left by traditional calendar applications, this utility focuses specifically on the mathematics of time, allowing you to instantly solve any query related to durations, intervals, and international holiday occurrences. With an advanced calculation engine and a fluid cross-platform interface, the app enables you to determine with surgical precision the exact number of years, months, weeks, and days between any two dates, eliminating the risk of human error in manual calculations. Beyond calculating time differences, the app features a versatile date projection function that allows you to add or subtract specific time periods to immediately identify future deadlines or past events, an indispensable tool for project management, legal term calculations, or retireme -
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zero
Privacy-first offline expense tracker. No cloud. No tracking.
zero is a privacy-first, fully offline expense tracking app for Android and iOS. Unlike most finance apps, zero does not require accounts, cloud sync, subscriptions, or internet access. All financial data stays locally on your device. There are no ads, no telemetry, and no analytics. zero helps you: • Track daily expenses in a clean timeline • Visualize spending with simple reports • Create unlimited custom categories • Manage lendings and borrowings • Export or delete your data anytime Built with a local-first philosophy, zero gives you full control over your financial data. Your data. Your device. Zero servers. Open source and actively maintained. -
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Ballistic Calculator
Open Source Ballistic Calculator in C#
!!! This project is currently CLOSED. There is a new version of API available under LGPL license at https://github.com/gehtsoft-usa/BallisticCalculator1 There is a new version of application in progress (ported to net framework 5.0) https://github.com/nikolaygekht/ballistic.calculator.app Ballisitic Calculator based on JBM's implementation 3-degree of freedom model, ported to C#, improved to support metric system and extended by some math from Litz's "Applied Ballistic" book. Calculator displays ballistic tables, graphs, comparison graph and reticle images. The application is free to use under GNU license -
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Wrong Answer Calculator
Wrong answer guaranteed, first time, every time.
Just a little mindless fun using beghilos or calculator spelling. -
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antoniovandre_eval - Android app
Android app interface for antoniovandre_eval software.
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CalcTech
CalcTech: Custom themes and advanced editing for seamless calculations
CalcTech is the ultimate calculator app designed to blend powerful functionality with deep personalization. Tailored for students, professionals, and math enthusiasts, it goes far beyond basic arithmetic by offering an extensive suite of customizable features. The standout highlight of CalcTech is its advanced Theme Engine. Recognizing that a workspace should be as unique as the user, the app offers a vast array of aesthetic options. Users can choose from sleek dark modes for late-night study sessions, vibrant high-contrast palettes for clarity, or minimalist professional layouts. This visual flexibility ensures that the interface remains engaging and easy on the eyes during long hours of complex problem-solving. In addition to its looks, CalcTech provides unmatched Editing Versatility. Unlike standard calculators that force you to start over if you make a mistake, CalcTech features a sophisticated cursor-based editing system. This allows you to tap anywhere within a long equations -
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anDOF
dof-calculator for android
Depth of Field (dof) calculator for photographers (SLR) - Enter distance, focal-length and aperture to get near- and far-focus (+hyperfocal-distance) - Reverse mode: enter depth of field and get distance/focal/aperture Intuitive illustration of decreased / increased dof Define your lenses to regulate permitted input-values (e.g. focal-range) Quickly switch to your currently used lens No ads, no costs, released as Free/Open-Source-Software (GPL v3) -
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danscalculator
A calculator I am working on
A simple calculator I have created -
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Alcohol Calculator
Ein Alkohol Rechner
Dieser Alkohol Rechner gibt dem Nutzer die Möglichkeit ungefähr seinen Alkoholgehalt im Blut zu bestimmen. Alle Angaben des Programms sind natürlich ohne Gewähr und natürlich kann der Alkoholgehalt auch wesentlich höher oder niedriger sein. -
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Android Calc
Standart android calculator mobile application
Standart android calculator mobile application -
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AndroidBmiCalc
BMI calculator for Android.
BmiCalc is a simple app to track the body mass index. User can load and save the csv files with data. -
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Bar Calculator
Sum the drinks and food you consume
This application is done for mobile phones, to sum all your consumption at the bar or the restaurant. Easylie increase or decrease your beverages or add new stuff. -
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Beerans Calculator Suite
All-in-one calculator for everyone!
A free, fully offline calculator suite available as both a **Progressive Web App** and a **Windows desktop app** — **55 calculators across 8 categories**, no ads, no subscriptions, no account required. PWA — Install as an App Beeran's Calculator Suite is a **Progressive Web App** — install it from your browser with no App Store required. ### Android (Chrome) 1. Open Chrome and go to **[beeranscalculatorsuite.com](https://beeranscalculatorsuite.com)** 2. Tap the **⋮ menu** → **"Add to Home screen"** 3. Tap **"Add"** — the icon appears on your home screen ### iOS (Safari) 1. Open Safari and go to **[beeranscalculatorsuite.com](https://beeranscalculatorsuite.com)** 2. Tap the **Share button** (box with arrow) at the bottom 3. Tap **"Add to Home Screen"** → **"Add"** > PWA installation on iOS requires Safari. Chrome on iOS does not support "Add to Home Screen" for PWAs. -
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Beschleunigung-berechnen
Various calculations related to acceleration and deceleration
- Diverse Berechnungen im Zusammenhang mit Beschleunigung und Verzögerung. - Various calculations related to acceleration and deceleration Topics: rechner berechnen calculator to calculate beschleunigen beschleunigung webpage webseite
