# Rule of 3 Calculator Alternatives

Rule of 3 Calculator is described as *'portable tool that allows you to apply the mathematical Rule of Three in an easier, faster and more practical way!'* and is a Calculator in the education & reference category. There are more than 100 alternatives to Rule of 3 Calculator for a variety of platforms, including Android, Mac, Windows, Online / Web-based and Linux. The best alternative is SpeedCrunch, which is both free and Open Source. Other great apps like Rule of 3 Calculator are Qalculate!, Wolfram Alpha, Numi and fxSolver.

SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and many features, such as variables, syntax highlighting, functions, persistent input history & more.

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Qalculate! is a multi-purpose cross-platform desktop calculator. 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).

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- Freemium • Proprietary
- Calculator

56 alternatives to Wolfram Alpha- Online
- Android
- iPhone
- Windows Phone
- iPad
- Kindle Fire

Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that might contain the answer.

Numi is a handy calculator app for macOS. It allows to describe tasks the natural way and instantly get an accurate answer. For example, $20 in euro - 5% discount or today + 2 weeks. Numi is not limited to simple calculations, it can solve expressions of any complexity, with...

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Online math solver, equation editor and database, graphing calculator and science/engineering problem helper.

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Soulver is a smart notepad with a built-in calculator. It gives instant answers to any calculations it finds in your text. It's a better way to work stuff out than with a traditional calculator, and a more lightweight tool for quick calculations than a spreadsheet.

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High precision scientific calculator with full support for physical units (web and terminal versions).

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A simple yet powerful calculator that includes standard, scientific, and programmer modes, as well as a unit converter. It's the perfect tool to add up a bill, convert measurements in a recipe or other project, or complete complex math, algebra, or geometry problems.

- Free • Proprietary
- Calculator

142 alternatives to Google Calculator- Android
- Chrome OS
- Android Tablet
- Android Wear

Calculator provides simple and advanced mathematical functions in a beautifully designed app.

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Simple and beautiful calculator for Android.

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