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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 The App Tower Inc. is a basic calculator app that offers customization options but is heavily criticized for its frequent and intrusive ads, which severely disrupt the user experience.

4.5★ lifetime (145,833) Free + in-app purchases since 2012 by The App Tower Inc. updated 3.6 mo ago recent negative 40% 120 reviews across 4 regions
Excessive Ads Basic Functionality Customization Options
5★407
4★67
3★66
2★58
1★294
recent reviews across 4 regions, vs the 4.5★ lifetime average

This calculator app provides basic arithmetic functions and allows users to customize its appearance with various themes and backgrounds. However, a significant number of recent reviews highlight an overwhelming presence of ads that interrupt calculations and make the app frustrating to use. While some users find it helpful for simple math, the ad experience often leads to uninstallation.

What users like

  • Provides basic calculator functionality and is helpful for math problemsR6R27R51R108
  • Offers various customization options like themes, backgrounds, and skin tonesR27R29R40R94
  • Numbers and symbols are a good size for usabilityR94R409

What users complain about

  • Excessive and intrusive ads frequently interrupt calculations and user flowR2R4R5R7
  • Ads are difficult to close, often with tiny or misleading 'x' buttonsR8R49R56
  • Lacks a backspace button, making corrections difficultR140
  • Does not automatically clear for a new calculation, requiring manual 'C' pressR477
  • Some users report lag and difficulty returning to start a new questionR10
  • Buttons are not large enough for some usersR263
  • Does not support percentages or division for some usersR28R473

Latest update · v14.0

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

- App maintenance

Recurring themes

Excessive Ads negative
The most prevalent complaint is the overwhelming number of ads that pop up frequently, often interrupting calculations, sometimes every few clicks or when clearing the calculator. Users find them annoying, intrusive, and disruptive to the app's basic function. Some ads are also reported to be difficult to close or misleading.R2R4R5R7
Basic Functionality mixed
The app generally performs basic calculations, which many users find helpful for school or everyday math. However, some users report issues like lacking a backspace button, not automatically clearing for new calculations, or even missing percentage/division functions.R6R10R28R51
Customization Options positive
Users appreciate the ability to change themes, backgrounds, and 'skin tones' of the calculator, finding these options visually appealing and a nice personal touch.R27R29R40R94

Who it's for

This app is for users who need a basic calculator for simple arithmetic and enjoy customizing the app's appearance, provided they are willing to tolerate frequent and intrusive ads R27R40R94. It is not for users who require an ad-free experience, advanced calculator functions, or seamless, uninterrupted calculations R2R4R5R7.

Evidence note: The developer's release notes for v14.0 mention only "App maintenance," which does not address the widespread user complaints about ads or functionality issues. Recent reviews strongly contradict any implied improvements in user experience, especially regarding ads.

Frequently asked

Does Calculator by The App Tower Inc. have ads?
Yes, Calculator by The App Tower Inc. has a significant number of ads that are frequently reported as intrusive and disruptive, often appearing every few clicks or when clearing the calculator R2R4R5R7.
Can you customize the Calculator app?
Yes, the Calculator app offers various customization options, including changing themes, backgrounds, and 'skin tones' to personalize its appearance R27R29R40R94.
Are there any missing features in this calculator app?
Some users report that the app lacks a backspace button, does not automatically clear for new calculations, and in some cases, may not support percentages or division R140R477R28R473.

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. [R6] 5/5 · US Calc: Very helpful
  2. [R27] 5/5 · US Helps a ton: Calc is a life saver for school and it has so many pretty backgrounds to choose from and it is completely free you should try it!!!!!
  3. [R51] 5/5 · US So helpful: The Calculator is so helpful. I’m smart enough to solve a lot of math problems, but when I can’t figure out what the answer is I click on the calculator and tap the buttons,wala,it’s solved my math problem. It’s the most helpful thing ever
  4. [R108] 5/5 · US Calculator: It is so helpful when I’m doing math in algebra and a lot of other times✖️➗➕!
  5. [R29] 5/5 · US Review: It is so good to calculate and it can change themes
  6. [R40] 5/5 · US Things you can do with app calculator: One you can act like it’s a normal calculator too. It literally has so many different numbers and even E is a number three. You can also change the skin tone. That’s right change the skin tone. All need to do is tap three gray lines and then you’ll have a different skin tone there’s like so many of them that’s number four. There’s like a rainforest and anythi
  7. [R94] 5/5 · US Math: This app is supper accurate and you can customize it to suit your own style. I always use it to check my math and the numbers and symbols are a great size. 🤩
  8. [R409] 3/5 · GB Calculator: Nice big buttons , doesn't turn with ipad bit annoying
  9. [R2] 1/5 · US Too many ads: lol it gives me an ad every time I click the c function. Useless
  10. [R4] 1/5 · US TOO MANY ADS!: Deleting this app. Way too many ads pop up. And they’re deceiving!! Don’t waste your time with this app.
  11. [R5] 1/5 · US Do not download this adfest: Annoying intrusive ads. This developer should be ashamed.
  12. [R7] 1/5 · US Calc: Adds are extremely annoying. Will stop using because of how bad.
  13. [R8] 1/5 · US Ads ads and more ads: That’s right. A calculator with ads. Furthermore it is difficult to impossible to exit from them. Simply horrible
  14. [R49] 1/5 · US TERRIBLE APP!!!!!!!!!!!!!!!!!!: It’s so bad. The same ads keep popping up every 2 numbers you type. And the same ad keeps popping up, with misleading x’s or just NO x’s.
  15. [R56] 2/5 · US Not easy to see where to close ads: I’m getting rid of this app because of the ads. The fact they pop up every time you open app I can live with but the big continue button at the bottom of the screen to leave the app and go to the ad’s site drives me crazy. The x to close the ad is tiny, and looks grayed out in an upper corner. Tired of hunting for it every time I open the app. I know it’s th
  16. [R140] 3/5 · US Ads: Ok people do not for the life of you download this app. Why are there ADS, also no backspace button
  17. [R477] 3/5 · GB Simple, but....: Basic calculator but if a second calculation is being made it does not automatically clear, C button needs to be pressed. May not be a big issue but not what I am used to do for that reason it has been removed from my iphone.
  18. [R10] 4/5 · US It was awesome: It was great the only problem is it was really laggy and I couldn’t figure out how to return to start another question but ether then that it was GREAT 😁I would get it
  19. [R263] 3/5 · GB Buttons not big enough: The buttons are NOT big enough
  20. [R28] 1/5 · US Terrible Choice: Calculator can't even do percentages also has lots of ads trust me, I do not choose this you will be disappointed and i usually do good reviews this app is trash
  21. [R473] 3/5 · GB Well...: It is usefull but it doesn't have division!!! 😟😟😟😡😡😡

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