OffOf
by Daeo Corp. Software
- Utilities
- Paid
- Zombie
- Small & simple · 100
- Rating
- 5.0
- 2 ratings · France storefront
- Last update
- Feb 18, 2024
- Version 2.0.1
- Size
- 6 MB
- Category
- Utilities
- Tracked since
- Oct 10, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
A beautiful percentage calculator.
OffOf helps you calculate to percentage OFF of a particular number, and the percentage OF a particular number.
OffOf is NOT a full calculator. Your device already comes with a great calculator. OffOf is a Percentage Calculator ONLY.
- 35% OFF
Instantly know how much you're going to spend while shopping. What is the cost of that $18.99 t-shirt when its 35% off? OffOf makes it easy to calculate.
Simply enter 35% as the "Percentage" and 18.99 as the "Amount" and OffOf will show you how much you'll be spending after the discount.
- 16% OF
What is 16% of 2,458? OffOf will get you that answer instantly. Just enter 16% as the "Percentage" and 2,458 as the "Amount" and you'll know right away.
- Real, satisfying mechanical keyboard sounds
- Delightful haptic feedback on button presses and more
What’s new
Release notes for the latest version, as written by the developer.
This app has been updated by Apple to prepare for watchOS 27 compatibility. No new features are included.
- Fixed a bug that stopped background music from playing when typing on the OffOf calculator
- Better visuals for the iPhone Mini
- Faster typing
Rank history
Daily position in the Tajikistan charts. #1 is at the top.
- Best rank
- #32
- Current rank
- #32
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
100/100
Small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size100% · 20
Ratings: 2
- App size100% · 10
Size: 6 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #3, 30 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 2.0.1LatestReleased Feb 18, 2024