Verithiathe honest score on any app
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‰ has historically been a well-loved, simple calculator app, but recent updates have introduced an overwhelming number of intrusive ads, making it nearly unusable for many long-time users.

⚠ Not updated in 14 months, this app may be abandoned
4.9★ lifetime (408,855) Free to download since 2011 by Tim O's Studios, LLC recent negative 20% 120 reviews across 3 regions
Intrusive Ads Simplicity & Ease of Use Abandonment/Deletion Missing Features/Bugs
5★387
4★33
3★20
2★28
1★83
recent reviews across 3 regions, vs the 4.9★ lifetime average

Calculator‰ is a free, basic calculator app praised for its simplicity and ease of use, particularly its large buttons. However, recent changes have led to a significant increase in frequent, long, and unskippable ads that interrupt calculations, causing many users to abandon the app.

What users like

  • Provides a simple, basic calculator experience without complex featuresR6R8R17R30
  • Features large, easy-to-read buttons, preferred over default phone calculatorsR42R45R47R55
  • User-friendly and intuitive for quick calculationsR11R13R19R20

What users complain about

  • Frequent, full-screen ads interrupt calculations and make the app unusableR2R4R5R7
  • Ads are often long, unskippable, and can cause the app to lock up or require restartingR4R26R35R46
  • Some ads are loud, disruptive, and play even after leaving the appR15R69R109
  • Lack of an option to pay for an ad-free version frustrates usersR77R81R96R496
  • Missing basic calculator functions like percentage or a backspace/undo button for the last entryR9R125R159R525
  • Concerns about privacy policy and data collection for a simple calculator appR21R41
  • Some users report issues with the app's sound effects or broken links within the appR3R74R502

Latest update · v5.4

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

- Bug fixes

Recurring themes

Intrusive Ads negative
The most prominent complaint is the sudden and overwhelming increase in full-screen, unskippable, and often loud ads that interrupt calculations, appear upon opening the app, or even play after closing it. Many long-time users report the app has become unusable due to these ad interruptions and have deleted it. This directly contradicts the developer's vague 'Bug fixes' note, as the ad experience has worsened significantly.R2R4R5R7
Simplicity & Ease of Use positive
Before the recent ad changes, users consistently praised the app for its straightforward, basic functionality, large buttons, and clear interface. Many preferred it over their device's default calculator for its simplicity and reliability.R6R8R11R13
Abandonment/Deletion negative
A significant number of long-term users, some having used the app for years, have deleted the app due to the unbearable ad experience. They express frustration and disappointment, actively seeking alternative calculator apps.R2R5R7R14
Missing Features/Bugs negative
Some users note the absence of a percentage function, a 'clear last entry' button, or issues with slide-over functionality on iPad. There are also reports of broken links within the app and random loud button noises.R3R9R22R125

Who it's for

This app was previously for anyone seeking a simple, basic, and easy-to-use calculator with large buttons. However, due to the recent influx of intrusive ads, it is no longer recommended for users who need a quick, uninterrupted calculation tool or those who prefer an ad-free experience R2R5R7.

Evidence note: The recent reviews overwhelmingly focus on the negative impact of new, intrusive ads, contradicting the lifetime rating. While some positive reviews still exist, they often predate or are quickly followed by complaints about ads, indicating a sharp negative trajectory in user sentiment. The developer's notes mention 'Bug fixes' but do not address the ad situation, which is the primary user concern.

Frequently asked

Are there many ads in Calculator‰?
Yes, recent reviews indicate that Calculator‰ now has a significant number of intrusive, full-screen ads that frequently interrupt calculations and make the app difficult to use R2R4R7R14.
Can I get an ad-free version of Calculator‰?
Based on recent reviews, there is currently no option to purchase an ad-free version of Calculator‰, which is a point of frustration for many users R77R81R96R496.
Is Calculator‰ easy to use?
Yes, many users praise Calculator‰ for its simplicity, ease of use, and large, clear buttons, making it suitable for basic calculations R8R11R19R42.

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 Inexpensive, basic.: Works like a charm!
  2. [R8] 5/5 · US Easy!: Thank you for simple… sometimes we just don’t need 50 choices
  3. [R17] 4/5 · US Very simple: This is great. It is super easy to use and very basic. However it would be nice if it had more background options.
  4. [R30] 5/5 · US Basic. Calculator.: As simple as a calculator should be. Perfect.
  5. [R42] 5/5 · US Big Buttons: I love the big buttons and the red clear button way better than the factory iPhone calculator
  6. [R45] 5/5 · US Jummcalculator 🥰: Nice size calculator like a handheld one
  7. [R47] 5/5 · US Calculator%: Simple calculator, big keys - love it!
  8. [R55] 5/5 · US Best ever: Perfect font size for easy use. Love it.
  9. [R11] 5/5 · US From: This Calculator app is very easy to use & accurate.
  10. [R13] 5/5 · US Calculator: User friendly. Thanks.
  11. [R19] 5/5 · US The Best: Favorite Calculator. Ease of use. The best.
  12. [R20] 5/5 · US Easy tool: Great little tool for easy problems
  13. [R2] 1/5 · US Constant Ad Interruption: I used this app for years but now the interruptions with ads make it unusable. I’ve deleted and moved on. Not worth downloading.
  14. [R4] 1/5 · US Long ads: Almost impossible to use. This app has now incorporated long ads which begin shortly after opening. No way to close the ad without seeing it the full way through.
  15. [R5] 1/5 · US ANNOYING ADS!!: I just want a calculator! Nothing fancy, just a nice, basic calculator. This has now turned into an annoying ad machine. Deleting it from my phone.
  16. [R7] 2/5 · US Too many ads: I’ve been using this calculator on my phone for years and always loved it, but recently the ads have gotten absolutely ridiculous. If I’m trying to remember numbers to calculate, I’ll forget them before I can use the calculator because it jumps to ads as soon as I open the app. I don’t know what changed but this calculator has gone from awesome to useless.
  17. [R26] 1/5 · US Ads: This app is horrible. Runs ads for games that will not let out. Horrible .
  18. [R35] 1/5 · US Too many ads: I used to love this calculator and then it started showing ads. I dealt with it because the ads were short and I could get out of them easily. Today, I couldn’t get out of the ad at all so I had to use a different calculator. I’m so disappointed.
  19. [R46] 1/5 · US Was a great app until they ruined it: I have deleted this app from my iPad after using it for many years due to a recent update that blocks you from using the calculator until you sit through long ads. If the ads would have been in a banner at the top but still allowed use of the calculator I would have kept the app.
  20. [R15] 4/5 · US Used to be my fav: Basic and easy to use I’d give 5 stars if the tap the star thing worked- then today I use it and my phone starts talking!!! After I left the app! I get back to it to see what’s happening and it’s running an ad and apparently it doesn’t care what else you may be doing at the time. You better tell me this is a bug or I’ll start looking for another calculator Phone was defective an
  21. [R69] 2/5 · US Advertisement that you can’t stop: I was using this calculator all the time. I work in a hospital and sometimes need to calculate a dose of medication for pediatric patients. I started doing it today and suddenly my phone started running an ad for something totally unrelated. I couldn’t stop it, it was loud and totally embarrassing as I was standing in a front of the patient it his family. I will
  22. [R109] 3/5 · US Ads are out of control!: I get that the developer needs to make money. I support the developer making money. The ads are out of control now. I can’t get through simply adding a few new numbers together without ads interrupting me in the middle of it. They are loud and long! . I love the basic calculator and I have used it for years, but it’s unusable now.
  23. [R77] 5/5 · US Great calculator: Ads are driving me crazy, I’ll pay extra if you get rid of those pesky ads.
  24. [R81] 1/5 · US Got greedy: I have used this app for over 10 years with no problem. Suddenly started running highly intrusive and interruptive ads. Today I needed to quickly run some numbers while making a deal over the phone. App immediately ran a lengthy ad about a stupid truck game and then locked up. Had to run across the house and get my iPhone. I was fortunately dealing with a patient person, so it didn’t
  25. [R96] 5/5 · US Can I purchase an add free version?: Can I purchase an add free version?
  26. [R496] 3/5 · GB Very annoying Adverts!: Just get rid of them and charge 99p for the App!
  27. [R9] 1/5 · US Calculator: Won’t clear
  28. [R125] 3/5 · US Missing One Important Feature: If there is a way to delete the last entry without deleting the entire running tape of calculations- I can’t figure it out. Sometimes you hit the wrong button and there’s no way to erase that without starting over.
  29. [R159] 3/5 · US No percentage function: No percentage function
  30. [R525] 3/5 · AU Good calculator but limited functions: I would like it if I could do more stuff with it
  31. [R21] 1/5 · US What the privacy?!: From real, what is wrong with the world. Why do I need to sign a privacy policy to use a calculator? They are gonna scan my phone & siphon my data to the highest bidder just so I can add up a stack of checks. Garbage.
  32. [R41] 1/5 · US Just Deleted: Ad tracking - Always great when during a business meeting an ad pops up and you cannot use the app. I will pay for a different one so I don’t have to deal with this or the embarrassment. PS- I turned off ad tracking and also with google to no avail.
  33. [R3] 5/5 · US Great Calculator: I love your app, thankyou! Just wanted to mention that some of your ads go to a "url not found" page and also when I click "legal," it goes to a blank page.
  34. [R74] 1/5 · US Stupid Click .. WHY: How do I turn off the stupid new loud click. I used to really like this calculator. I tried another one but it isn’t as good. But I can’t go back till the click is gone!
  35. [R502] 3/5 · AU Al.: Some buttons make a louder noise randomly which is very annoying… Apart from that does the job. Would have rated it five stars otherwise.
  36. [R14] 3/5 · US Ads: I realize you need to make money, but EVERYTIME I hit total an ad comes up. This used to be my favorite calculator. Time to move on
  37. [R22] 1/5 · US Calculator: Slide over not working after iPad update. Now I can’t use it for my banking.

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