Percentage Off Calculator
Discounts, stacking and tax
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
What does it actually cost after the discount — including the stacked one, and the tax. Enter any two, get the third.
What does it actually cost after the discount — including the stacked one, and the tax.
One screen: original price, percent off, final price. Enter any two and the third is solved. The same layout answers all three questions without a mode switch:
• What is 30% off $80?
• What percent off is this? (it was $80, now $56)
• What was the original price? ($56 after 30% off)
STACKED DISCOUNTS, DONE RIGHT
"Extra 20% off sale prices" is a first-class toggle, and the app shows the arithmetic step by step — because this is the sum people get wrong. 20% off, then another 20% off, is 36% off. Not 40%. The app does it in the right order and shows its work.
SALES TAX
Add your tax rate and the answer becomes the number that will actually appear on the card reader, not the shelf number.
COMPARE TWO DEALS
A compare list settles which of two offers is really cheaper — the bigger percentage off a higher price is not always the better deal, and this is the fastest way to find out while you are standing in the aisle.
BUILT TO BE FAST
It opens on the keypad with the cursor already in the price field. No splash screen, no tour, no sign-up. Type and read.
• Works completely offline
• No account, ever
• Free, with nothing gated
• No advertising
• Nothing you type leaves your device
For anyone standing in a shop working out whether the sale is actually a sale.
Ratings & Reviews
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The developer, Harbor Apps LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Harbor Apps LLC
- Size
- 4.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Rhett Owen