Estimated from the grossing charts of Oct 26, 2026 in the 53 countries we track, and ratings growth on the App Store.
From our daily snapshots of every grossing chart and daily ratings counts.
| Sep 28, 2026 | not in a grossing chart |
| Sep 29, 2026 | not in a grossing chart |
| Sep 30, 2026 | not in a grossing chart |
| Oct 1, 2026 | not in a grossing chart |
| Oct 2, 2026 | not in a grossing chart |
| Oct 3, 2026 | not in a grossing chart |
| Oct 4, 2026 | not in a grossing chart |
| Oct 5, 2026 | not in a grossing chart |
| Oct 6, 2026 | not in a grossing chart |
| Oct 7, 2026 | not in a grossing chart |
| Oct 8, 2026 | not in a grossing chart |
| Oct 9, 2026 | not in a grossing chart |
| Oct 10, 2026 | $31.2K a month |
| Oct 11, 2026 | $31.2K a month |
| Oct 12, 2026 | $13.3K a month |
| Oct 13, 2026 | $550 a month |
| Oct 14, 2026 | $363 a month |
| Oct 15, 2026 | not in a grossing chart |
| Oct 16, 2026 | $251 a month |
| Oct 17, 2026 | not in a grossing chart |
| Oct 18, 2026 | not in a grossing chart |
| Oct 19, 2026 | $1.7K a month |
| Oct 20, 2026 | not in a grossing chart |
| Oct 21, 2026 | not in a grossing chart |
| Oct 22, 2026 | not in a grossing chart |
| Oct 23, 2026 | $13.3K a month |
| Oct 24, 2026 | not in a grossing chart |
| Oct 25, 2026 | $13.3K a month |
| Oct 26, 2026 | not in a grossing chart |
| Oct 27, 2026 | not in a grossing chart |
| Oct 22, 2026 | 140.3K ratings |
| Oct 23, 2026 | 140.4K ratings |
| Oct 24, 2026 | 140.4K ratings |
| Oct 25, 2026 | 140.4K ratings |
| Oct 26, 2026 | 140.4K ratings |
| Oct 27, 2026 | 140.4K ratings |
Measured from the store, not estimated.
From the latest 100 reviews on the United States App Store, Jan 13, 2018 to Jul 6, 2025: 49% are 1 or 2 stars. Open a theme to read what people wrote.
26 of the 1 and 2 star reviews.
★★★★★ Used to be a somewhat good app but they added more and more ads which made this app unusable over the years.
★★★★★ I'm sure it still is under the ads.
★★★★★ An excellent app with exception of last update with ads every few clicks you use the calculator.
6 of the 1 and 2 star reviews.
★★★★★ Now you want me to pay a yearly subscription on top of what I already purchased.
★★★★★ Now you can't use most of the app without paying a subscription, insane
★★★★★ Developer should consider charging instead of playing idiotic ads.
5 of the 1 and 2 star reviews.
★★★★★ An excellent app with exception of last update with ads every few clicks you use the calculator.
★★★★★ I downloaded this app years ago, and it was great. Then I'm the last several years I noticed more and more ads that just always happened to pop-up right when I'm about to make a calculation and causes me to press the…
★★★★★ That was my mistake to update the application.
4 of the 1 and 2 star reviews.
★★★★★ Promptly deleted the entire app.
★★★★★ I don't have 30-60 seconds every few minutes to watch an ad, nor do I need to lose my train of thought when I'm making decisions that could literarily kill me or others.
★★★★★ Deleted and now am getting a different app.
4 of the 1 and 2 star reviews.
★★★★★ Okay, let's be fair: No one expects a company to develop an app with no reward for their work...so I expect ads, and there's nothing wrong with that.
★★★★★ Try 32 Fahrenheit to Celsius. It should be 0. Instead, it shows around 17. Pretty big flaw which tells me that I cannot rely on this app really. Will update my rating when fixed.
★★★★★ It's interface makes no sense and it becomes completely useless without data or WiFi which is frequently the case when traveling.
3 of the 1 and 2 star reviews.
★★★★★ Bug me for ratings and I'll give 1 star every time...
★★★★★ Especially since it has UI bugs in a few places throughout the app.
★★★★★ the current update does not work properly on the lastest ios 9 version.
2 of the 1 and 2 star reviews.
★★★★★ Slow app, and paste feature may not transfer data.
★★★★★ Takes forever to add a simple problem!
2 of the 1 and 2 star reviews.
★★★★★ I'm good with ads in apps to support developers, however full page, highly intrusive ads that pop up mid-calculation and take 30+ seconds to clear are too much and make this app unusable without utter rage and…
★★★★★ Only problem is, I got sick of the ads so I paid for it but the ads won't stop and no response from their support group
8 of the 4 and 5 star reviews.
★★★★★ Nice big caricatures to see. Shows last calculation. Memory works well. My math skills have atrophied to the point I could not do the simplest equations without this product.
★★★★★ Large, easy-to-read interface.
★★★★★ If you want a calculator for your iPad/iPhone that is quite functional yet easy to see and easy to use, thus is the one.
3 of the 4 and 5 star reviews.
★★★★★ Very useful converter and calculator.
★★★★★ This conversion app is slick, extremely easy to use, and graphically very attractive.
★★★★★ Unobtrusive ads on the free version won't distract your attention from the problem being solved. I may upgrade this app to the full version. I'd like to see a chemistry (soil) conversion feature, ph, macro &…
3 of the 4 and 5 star reviews.
2 of the 4 and 5 star reviews.
★★★★★ I have no idea which “genius” decided virtually no contrast was better but obviously he/she is young and has excellent eyesight, many of us enjoy neither trait.
★★★★★ Enjoy the app for numerous task
Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.
Latest reviews, United States App Store.
This is one of those developers who trick you into believing that you can get their Pro apps for free ($0.00) by way of advertising it here on the App Store just to get downloads, probably hoping to score a subscriptionn.
内购限免骗人的，根本没有这个选项
I used to really like this app before it was required to pay to do conversions for things like area and others
Used to be a somewhat good app but they added more and more ads which made this app unusable over the years. Good news: in iOS 18 the native calculator does EVERTHING this app does and WITHOUT any ads! Never using this app again!
I can do this anything but the ads
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Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.
Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.
Where this app is buying and earning its users. Each link opens pre filtered.
Most repeated terms in the listing. Highlighted ones also appear in the title.
Released Apr 23, 2011. Current version shipped Oct 21, 2025.
Prices, ranks and reviews are per country. Revenue above is already worldwide.
