Rule of 3 Calculator is a portable tool that allows you to apply the mathematical Rule of Three in an easier, faster and more practical way!
Cost / License
- Free
- Proprietary
Application type
Platforms
- Windows

TTCalc has been discontinued. Similar apps include SpeedCrunch, which is free and open source. Other options are Qalculate!, Numi, GeoGebra Scientific Calculator and Soulver. You're spoiled for choice with Calculators like TTCalc: we list more than 50 alternatives for Windows, Android, iPhone, Mac and iPad.
Rule of 3 Calculator is a portable tool that allows you to apply the mathematical Rule of Three in an easier, faster and more practical way!

Simple yet very effective calculator with print capabilities and log registration.

Pocket PC calculator for scientific and engineering purposes. This calculator is very bright and easy to use, supports more than 50 functions. The Engineering Calculator has been nominated as the Best Pocket PC Software by Pocket.at in the EUROPE POCKET PC AWARD 2002.
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A modern, scientific calculator that is easy to use. While other calculators display only one number at a time, this one shows you the whole expression you are inputting, leading to a much more user friendly experience.



Calculator is a simple 4 function calculator, with a panel that has more advanced functions when you need them. It includes history, real time graphing, base conversion, and more. It also comes with a lockscreen widget, a floating calculator, and a wear app so you can use...
Scalar is a powerful math engine and scripting language, that combines the simplicity of standard tools with the flexibility of scripting. It is much more than a calculator. Thanks to Scalar, defining arguments and functions has never been easier.




Calcbuddy Calculator is an easy to use scientific calculator.
The calculator features:

Solve is a calculator like no other! Solve solves expressions as you type and features an innovative memory system to store and recall answers. Simply touch the answer to store it and touch the stored answer to use it in an expression.



worksheets or practice exercises, calculators & answer sheets to engage the grade school students to learn, practice, test & verify the answers themselves to measure the progress of their own


Online free calculators, math calculators, finance calculators, and many other useful calculators, with the steps of the calculation.

Plus42 is an advanced scientific programmable calculator, based on Free42. Free42, in turn, is a complete re-implementation of the HP-42S scientific programmable RPN calculator, which was made from 1988 until 1995 by Hewlett-Packard.


