Discount Calculator Sale Price
Sale price after tax, offline
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
The tag says 40% off — what will the register actually charge? Final price with tax, stacked coupons decoded, two deals compared. Instant, and fully offline.
The tag says 40% off. What actually comes out of your pocket at the register — and how much stays in it? PercentOff answers before the queue moves: type the price, slide to the discount, and the final price is just there, with sales tax on top if you want it. No signal needed — it works entirely offline, in the middle of any store.
PercentOff also knows the maths shops hope you'll get wrong. Stacked coupons multiply, they don't add: 30% off then an extra 20% off is 44% off, not 50%. When a stack mixes percentage coupons with money-off vouchers, the order changes the total — and PercentOff spots when a cheaper order exists and reorders the stack for you. Deal comparisons are judged on real, rounded prices, with an honest tie when both come to the same amount.
WHAT YOU GET
• Type 59.99, slide to 40% — see 35.99 and exactly what you saved, before you reach the register
• Sales tax charged on the discounted price, so the number on screen matches the receipt
• "Extra 20% off clearance" decoded: the price after every step of the stack, and the true effective discount
• Mixing a % coupon with a money-off voucher? A banner warns when a cheaper order exists and applies it in one tap
• Two racks, two offers — 80 at 30% off vs 100 at 50% off — one straight verdict on which costs less
• Paid 42 on sale and curious what it started at? Reverse mode works the original sticker price backwards
PERFECT FOR
• Clearance and rack shoppers who want the register price before they commit
• Online checkouts where promo codes and vouchers stack in unclear ways
• Resellers and thrifters checking an item's real markdown against its original price
• Anyone who freezes when the sign says "extra 30% off already-reduced items"
WHY NOT JUST THE PHONE CALCULATOR?
It can do one percentage. But tax on the discounted price, three chained coupons in the right order, and a fair verdict between two deals turns into a fragile string of ×0.7 ×0.8 you'll mistype under pressure. PercentOff shows the working at every step, remembers what you saved, and never needs a connection.
PRIVATE BY DEFAULT
No account, no ads, no tracking. Every price you type and every calculation you save stays in a local database on your phone. Currency and decimal format follow your device automatically.
FULL ACCESS
PercentOff Pro unlocks the whole app: the discount and tax calculator, coupon stacking, side-by-side deal comparison, and saved history with notes. Choose a Weekly or Yearly auto-renewing subscription, or a one-time Lifetime purchase that never renews.
Download PercentOff and know the register price while the tag is still in your hand.
Terms of Use: https://leanstudio.asia/terms-of-use
Privacy Policy: https://leanstudio.asia/privacy-policy
Support: support@leanstudio.asia
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and performance improvements.
Thanks for using the app — your feedback keeps it getting better.
Subscriptions
In-App Purchases
The developer, LEAN ASIA CO., LTD, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LEAN ASIA CO., LTD
- Size
- 4.6 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+
- In-App Purchases
Yes
- Checkout Savings Lifetime $19.99
- Deal Compare Yearly $9.99
- Stacked Coupons Weekly $1.99
- Copyright
- © 2026 LEAN ASIA CO., LTD