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Help for Dealora for iPhone, version 1.0.

Calculate discounts and tax

Enter the original price and a discount between 0% and 100%. Add extra discounts separately: 25% followed by 10% is a 32.5% effective discount, not 35%. Enter your applicable sales-tax rate; Dealora does not look up local tax rules.

Compare package sizes

Enter prices and positive quantities using the same unit for each option, such as grams or ounces. Dealora does not convert units. A best-value badge appears only for a unique cheapest option with valid matching units.

Find an original price

Tap “Find the original price” on Calculate. Enter the final price, a discount below 100%, and tax. The result is an estimate because rounding may prevent an exact reverse calculation.

Save and share

Tap Save to keep up to 30 calculations on this iPhone. Saved entries retain their original currency; changing currency is a display preference for new calculations, not an exchange-rate conversion. Swipe a saved entry to delete it. Use Clear to remove all saved entries after confirmation.

How rounding works

Dealora uses Decimal arithmetic and half-even rounding. The discounted subtotal and tax are rounded separately, then added. Savings exclude tax. A retailer may use different rounding rules.