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Updated July 2026 · real, multi-region App Store reviews
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The verdict on

Calculator⁼

40
User verdict / 100 High confidence Divided

Calculator= by Impala Studios B.V. is a functional and easy-to-use calculator app, but its free version is heavily criticized for an overwhelming number of intrusive ads, and even paid versions are reported to have persistent promotional pop-ups.

4.6★ lifetime (357,848) Free + in-app purchases since 2011 by Impala Studios B.V. updated 1.2 mo ago recent negative 50% 120 reviews across 4 regions
Excessive Ads Paid Version Issues Slow Startup Core Functionality
5★354
4★71
3★72
2★73
1★430
recent reviews across 4 regions, vs the 4.6★ lifetime average

Recent reviews for Calculator= show a significant decline in user satisfaction, primarily due to an excessive number of ads in the free version and persistent promotional pop-ups even for paid subscribers. While users generally find the core calculator functionality easy to use and accurate, the ad experience is making the app nearly unusable for many.

What users like

  • The calculator is easy to use with a simple interface and large numbers.R16R37R43R88
  • It offers multiple calculation options and shows the history of operations.R36R47R88R107

What users complain about

  • The free version is plagued by an excessive and intrusive number of ads, often full-screen or video ads, which makes the app nearly unusable.R1R2R4R5
  • Users who paid for an ad-free version or subscription still encounter pop-up ads, often promoting the developer's other apps, leading to frustration and perceived fraud.R10R30R33R39
  • The app takes a long time to open, often due to loading ads or promotional screens, hindering quick calculations.R23R30R31R32
  • Some ads are difficult to close or force users to click out of the app.R15R51R158R198
  • The calculation history feature is reported to be unreliable or non-existent for some users, even for subscribers.R131R173
  • There are reports of the app freezing or not working after reinstallation.R17
  • The app sometimes displays an age rating of 16+ despite being listed as 4+ on the App Store.R445
  • In split view or slide over on iPad, the history bar can obscure the calculation screen in horizontal orientation.R533

Latest update · v3.13.0

What the developer says changed (the verdict above weighs this against what reviewers report):

In this latest update you'll find: - A fresh new look with Liquid Glass for iOS 26 and above. - Bug fixes and performance improvements. Thanks for your support, and enjoy using our app!

Recurring themes

Excessive Ads negative
The most prevalent complaint is the overwhelming number of ads in the free version, often full-screen, video, or pop-ups that interrupt usage, delay access to the calculator, and are difficult to close. Many users describe the app as 'unusable' due to ad bombardment.R1R2R4R5
Paid Version Issues negative
Even users who paid for an ad-free version or subscription report still receiving pop-up ads, particularly for the developer's other 'Calculator+' app. This leads to feelings of frustration, being scammed, and wasted money, with some users cancelling subscriptions and seeking refunds.R10R30R33R39
Slow Startup negative
Many users complain that the app takes too long to load, often due to the initial display of ads or promotional screens. This delay makes the app inconvenient for quick calculations, which is a primary need for a calculator.R23R30R31R32
Core Functionality positive
Despite the issues with ads, the actual calculator functionality is generally praised for being easy to use, accurate, and having a clear display with large numbers. It supports various calculation options and shows calculation history.R16R36R37R43

Who it's for

This app is for users who need a basic, easy-to-use calculator and are willing to tolerate a significant number of intrusive ads in the free version R2. It is NOT for users who need a quick, uninterrupted calculator experience, or those who expect an ad-free experience after paying for a subscription R10R30.

Evidence note: The recent reviews heavily skew negative, with the vast majority of complaints centered on ads and paid version issues. Positive feedback primarily acknowledges the core functionality but often still mentions ads as a drawback. The developer's notes mention 'bug fixes and performance improvements' but recent reviews contradict this with reports of slow loading and freezing R17.

Frequently asked

Does Calculator= have ads?
Yes, the free version of Calculator= has a very high volume of intrusive ads, including full-screen and video pop-ups that often interrupt calculations and delay access to the app R2R14. Even users who paid for an ad-free subscription report still seeing promotional pop-ups, particularly for the developer's other apps R10R30.
Is Calculator= easy to use?
Yes, many users find Calculator= easy to use, with a simple interface, large numbers, and clear display of calculations R16R37R43R88.
Does Calculator= save calculation history?
While some users appreciate the ability to check math as they go, there are reports that the calculation history feature is unreliable or does not persist, even for paid subscribers R43R131R173.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R16] 5/5 · US Simple: Easy to use.
  2. [R37] 5/5 · US Efficient: This calculator app is very easy and efficient
  3. [R43] 5/5 · US Barbara: So easy to use! I love that you can double check the math as you go along!
  4. [R88] 5/5 · US Good calculator: I like to use this. The numbers area good size. It also shows all the numbers in your calculations so you can check your operation be it diction, subtraction, multiplication or division.
  5. [R36] 5/5 · US Quick, accurate: Works great and provides several kinds of calculation options .Easy, quick, accurate!
  6. [R47] 5/5 · US Great: Lets me do lots of calculations
  7. [R107] 5/5 · US Algebra: Love it functions
  8. [R1] 1/5 · US Ad: Too many ads on iPad.
  9. [R2] 1/5 · US Too Many Ads: Every update of this App adds more Ad’s !! The App is now almost unusable !! SAD.
  10. [R4] 1/5 · US Too many ads: Too many ads
  11. [R5] 1/5 · US To many ads: Why is it a calculator has ads. Dumb
  12. [R10] 1/5 · US Ads: Paid for the no ads version and ads for their even better calculator pop up every time you open the app. Very distracting. Deleted.
  13. [R30] 1/5 · US Frustrated: Updated: This is ridiculous! This is supposed to be a PAID, ad-free app and I am perpetually asked to purchase a different app! An app that used to load instantly now takes 10 seconds because it loads an ad. While using it, I get interrupted constantly to purchase a different app. This is a productivity app that I use for real work! I’ve used this for years and I’m used to it, but beca
  14. [R33] 2/5 · US Constant developer-built interruptions in PAID version: I really wanted to love this - it’s a pretty functional little app I used to use to do calculations very quickly on my job (emphasis on QUICKLY). I liked it enough to pay $5.99/year for this version. The trouble is, the app opens (now much more slowly after a previous update) with a screen to push you to purchase their $5.99/week version. You
  15. [R39] 2/5 · US Still popping up ads: I paid for a subscription and every time I want to use it I still have pop up ads! Deleted and cancelled subscription.
  16. [R23] 1/5 · US Calculator: I hate the steps and stupid commercials I have to go through to get to my calculator. When I need it, I need it now, not after all the dang commercials play.
  17. [R31] 1/5 · US Ads!: I hadn’t used this for a few years until recently. You have trouble getting even to start using it due to all of the ads. A few days ago I had to sit through 4 ads just to get to the screen to start using it! Deleting!!!
  18. [R32] 1/5 · US Spam: Not sure what happened, but he used to be able to just use a calculator and now I’ve gotta bump through three screens of commercials each time
  19. [R15] 1/5 · US Too many ads: Great app but the aggressive ads drop it 5 to 1 understand the need for ads but to not allow to exit out is the problem
  20. [R51] 2/5 · US Inconvenient ads: I used to live this app & I’ll put up With occasional ad to use the free version but some of the ads don’t end even after over 30 seconds - the only way out is through. You have to click on the ad which takes you out if the app. Then you have a 50/50 shot of getting back to calculator app without dealing with 2 more ads. One short which I don’t mind and another long one which
  21. [R158] 5/5 · US Used to be Worth 5-Stars: Too Many Ads: Originally, I loved it. However, now every time I use it, before I can complete a calculation, 3 pop-up ads appear. The adds cover the whole screen, and most of the time, you can’t find the “X” to close the 3rd ad. To the developer: I am removing this calculator from my devices, today. I would have happily paid 9.99 to own the app. I am not going to pay
  22. [R198] 3/5 · US AD Delays: I understand having ads to get the free app but some ads delay for particularly long time or are difficult to see how to close them. Good calculator but for this type of app it can be a bit frustrating. I am looking at using another calculator app
  23. [R131] 5/5 · US Calculator: I love the app but it doesn’t save my history anymore
  24. [R173] 3/5 · US History isn’t there: I have used this app for several years. What a shock to find my history isn’t there anymore. It does not stay even 24 hours. I pay for a subscription and this is highly disappointing. What is going on? If this isn’t going to be fixed, I will find another app. 😐
  25. [R17] 3/5 · US Too Many Ads: Froze, so I reinstalled. Now can’t even get it to work.
  26. [R445] 3/5 · GB It’s alright.: On the App Store it says 4+ but on the game it says 16+?!how dumb?!it is still a good game.
  27. [R533] 3/5 · CA History bar over calculation screen on split view & slide over: When the iPad is vertical, no problem whit the history bar on slide view or slide over. But if the iPad is put on horizontal, if you put the app on slide view or slide over, the history bar floating over the calculation screen & over the upper calculation touch, hiding a part of the number. That’s very bad…
  28. [R14] 1/5 · US Calculator: I don’t like your app because when I want to use it I have to endure countless ads before I can actually get to the calculator!!!

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store