ProportionsOf ? app for iPhone and iPad

In maths: the product of the means equals the product of the extremes ∴ x:z=y:w => x.w=z.y

This APP uses the Rule of Three to calculates the ratio between values.

You can calculate, for example, if its worth buying a promotional product like the following:

"Buy 70gr of biscuit for €4.98 or 140gr for € 9.97".

Would not it be more advantageous to buy 2 of 70g instead of 1 package of 140g?
Well, you can draw your own conclusions using the app for a multitude of calculations.

Basically, the entire world around your is a matters of proportions.

The App also a great tool for children to get a notion of how they can calculate proportions using the rule of three to start to use on their daily-life.

Available in Arabic, Bengali, Chinese, Dutch, English, French, German, Greek, Hebrew, Hindi, Irish, Italian, Japanese, Korean, Malay, Persian, Portuguese, Russian, Spanish, Turkish and Ukrainian.

NOTE:
* By downloading this APP you agree to:
∙ Terms & Conditions of Use (https://proportionsof.in-app.info/legal.php?l=en&doc=term_and_conditions)
∙ Privacy Policy (https://proportionsof.in-app.info/legal.php?l=en&doc=privacypolicy)
∙ Displaimer (https://proportionsof.in-app.info/legal.php?l=en&doc=disclaimer)

For more information, please visit the website: https://proportionsof.in-app.info/?l=en