Rule of 3 Calculator AlternativesCalculators and other similar apps like Rule of 3 Calculator

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, Windows, Mac, iPhone and Web-based apps. The best Rule of 3 Calculator alternative is Wolfram Alpha, which is free. Other great apps like Rule of 3 Calculator are SpeedCrunch, Fossify Calculator, Qalculate! and OpenCalc.

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Alternatives list

  1. Wolfram Alpha icon

    Wolfram Alpha

     493 likes
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    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.

    59 Wolfram Alpha alternatives

    Cost / License

    • Freemium (Pay once)
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Kindle Fire
    Wolfram Alpha screenshot 1
     

    • Wolfram Alpha is the most popular Web-based, Android, iPhone & iPad alternative to Rule of 3 Calculator.

    • Wolfram Alpha is the most popular free alternative to Rule of 3 Calculator.

    • Wolfram Alpha is Freemium and ProprietaryRule of 3 Calculator is Free and Proprietary
  2. SpeedCrunch icon

    SpeedCrunch

     291 likes
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    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.

    130 SpeedCrunch alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • PortableApps.com
    Dark Mode
     

    • SpeedCrunch is the most popular Windows, Mac & Linux alternative to Rule of 3 Calculator.

    • SpeedCrunch is the most popular Open Source alternative to Rule of 3 Calculator.

    • SpeedCrunch is Free and Open SourceRule of 3 Calculator is Free and Proprietary
    • SpeedCrunch is Lightweight and Privacy focusedRule of 3 Calculator is not according to our users
  4. Fossify Calculator icon

    Fossify Calculator

     29 likes
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    Introducing Fossify Calculator – your versatile and efficient tool for all your calculation needs. Enjoy a stylish, modern design paired with powerful functionality, perfect for both simple calculations and more complex tasks like currency conversion.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
    • Android Tablet
    Fossify Calculator screenshot 1
    Fossify Calculator screenshot 2
    Fossify Calculator screenshot 3
     
  5. Qalculate! icon

    Qalculate!

     101 likes
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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).

    115 Qalculate! alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Main window
     
  6. OpenCalc icon

    OpenCalc

     21 likes
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    A simple and beautiful calculator for Android.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    OpenCalc screenshot 1
    OpenCalc screenshot 2
    OpenCalc screenshot 3
     
  7. fxSolver icon

    fxSolver

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

    149 fxSolver alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
    Solver page
     
  9. Numbat icon

    Numbat

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

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    Numbat screenshot 1
     

    • Numbat is the most popular Self-Hosted alternative to Rule of 3 Calculator.

    • Numbat is Free and Open SourceRule of 3 Calculator is Free and Proprietary
    • Numbat is Lightweight and Privacy focusedRule of 3 Calculator is not according to our users
  10. Calc You icon

    Calc You

     7 likes
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    Privacy focused calculator app built with MD3.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
    Calc You screenshot 1
    Calc You screenshot 2
    Calc You screenshot 3
     
  11. Numi icon

    Numi

     27 likes
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    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...

    123 Numi alternatives

    Cost / License

    • Freemium (Pay once)
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Terminal
    Numi screenshot 1
     
  12. Soulver icon

    Soulver

     32 likes
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    Do you ever grab a calculator & the back of an envelope to work through an idea or problem that involves some math?

    116 Soulver alternatives

    Cost / License

    • Pay once
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    Soulver screenshot 1
     

    • Soulver is the most popular commercial alternative to Rule of 3 Calculator.

    • Soulver is Paid and ProprietaryRule of 3 Calculator is Free and Proprietary
  13. Calculator You icon

    Calculator You

     5 likes
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    Discover the ultimate calculator experience with our beautifully designed app, featuring 60+ stunning color themes to match your style. Whether you're tackling complex scientific equations or simple everyday calculations, our powerful and user-friendly interface makes it all...

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
    Calculator You screenshot 1
     
12 of 120 Rule of 3 Calculator alternatives