ARANGEE Guides

Clear, practical explainers to help you get more from the tools.

Money

Work out sale prices and stacked discounts correctly — and avoid common retail pricing tricks.

Practical frameworks for deciding how much to save, from the 50/30/20 rule to working backwards from a goal.

A clear explanation of how percentages work, with the three formulas you'll use most often.

Turn an annual salary into an hourly rate with a simple formula — and understand why it matters.

Age is more than years — learn to calculate it in years, months and days, plus total days lived.