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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₊ is a functional calculator app praised for its ease of use and accessibility features, but it is heavily criticized for its aggressive monetization tactics, including frequent ads and expensive, often deceptive, subscription prompts.

4.7★ lifetime (1,723,239) Free + in-app purchases since 2010 by Impala Studios B.V. updated 0.6 mo ago recent negative 36% 120 reviews across 4 regions
Monetization & Ads Performance & Bugs Ease of Use Missing Features Accessibility
5★486
4★98
3★60
2★48
1★308
recent reviews across 4 regions, vs the 4.7★ lifetime average

Calculator₊ offers basic and scientific calculator functions, with recent updates improving accessibility through dynamic text size and VoiceOver support. However, a significant portion of recent reviews highlights issues with intrusive ads, high subscription costs, and misleading payment prompts, overshadowing its core functionality.

What users like

  • Easy to use and efficient for calculationsR9R11R24R25
  • Offers scientific calculator functions and other features like photo math (paid)R8R10R59
  • Recent update improved accessibility with dynamic text size and VoiceOver supportR2

What users complain about

  • Excessive and intrusive ads disrupt the user experienceR5R29R43R47
  • Aggressive and misleading subscription prompts, with high weekly/yearly costsR1R5R18R28
  • Performance issues like slow loading, lagging input, and crashesR22R79R98R173
  • Lack of essential features or bugs in basic functions (e.g., constant function, keyboard support, decimal/comma usage in widget, division results)R7R22R369R379
  • Paid features are considered too expensive, especially compared to free alternatives or other appsR8R19R26R30
  • Users report issues with transferring paid subscriptions to new devices or account problemsR14R38
  • Requests for reviews are seen as annoying or prematureR13R40R46R331

Latest update · v9.26.5

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

Calculator₊ just got better for everyone. This update is all about accessibility, making sure the calculator you already trust works just as effortlessly, no matter how you use your iPhone. What’s new: * Dynamic Text Size: Adjust the text size across the entire app to whatever feels comfortable. Perfect for anyone who prefers larger, easier-to-read numbers. * VoiceOver Support: Calculator₊ now fully supports the iOS VoiceOver feature, allowing you to navigate & calculate confidently. * High-Contrast Mode: A new high-contrast display option makes buttons and results sharper and easier to read, both in bright sunlight or low light. These features work seamlessly alongside your iOS accessibility settings, no additional setup required! As always, if you have feedback or questions, reach out to us at [email protected] — we read every message.

Recurring themes

Monetization & Ads negative
Many users are frustrated by the aggressive monetization strategies, including frequent, intrusive ads and high-cost subscriptions. They feel it's unreasonable to pay for a basic calculator, especially with recurring fees. There are also complaints about misleading 'free trial' buttons that lead to subscriptions and difficulty finding the ad-supported free version.R1R5R18R28
Performance & Bugs negative
Users report various performance issues, including slow app launch times, input lag when used as a widget, and occasional crashes. Some specific bugs mentioned include incorrect currency decimal/comma usage in the widget, division results showing '0e0' instead of a repeating decimal, and the inability to change from radians to degrees. There's also a complaint about missing keyboard support.R7R22R79R98
Ease of Use positive
Despite the issues, many users find the app easy to use, efficient, and appreciate its straightforward interface. The ability to switch between basic and scientific modes by rotating the screen is also noted positively.R9R11R12R24
Missing Features negative
Some users point out the absence of basic calculator features like a 'constant' function or a visible running tally of equations. Others note limitations in handling very large numbers or complex algebraic equations.R31R369R466R502
Accessibility positive
The recent update's focus on accessibility, specifically dynamic text size and VoiceOver support, is appreciated by users who benefit from larger, easier-to-read fonts.R2

Who it's for

This app is for users who need a calculator with both basic and scientific functions and appreciate features like dynamic text size and VoiceOver support R2R59. It might be suitable for those who don't mind frequent ads or are willing to pay a subscription for a calculator app . It is NOT for users who expect a free, ad-free experience, are sensitive to aggressive monetization tactics, or require advanced features like keyboard support or a constant function without bugs R1R5R28R369.

Evidence note: The recent reviews skew heavily negative, focusing on monetization and performance issues. While the lifetime rating is high, the recent sentiment suggests a negative trajectory, possibly due to changes in business model or recent updates. The developer's notes mention accessibility improvements, which are positively noted in a few reviews R2, but these are overshadowed by the volume of complaints regarding ads and subscriptions.

Frequently asked

Is Calculator₊ free to use?
Calculator₊ is free to download, but the free version includes many ads and prompts for subscriptions; many core or advanced features are paywalled behind a weekly or yearly subscription R1R5R64R111.
How much does Calculator₊ subscription cost?
The subscription for Calculator₊ is frequently cited as $5.99 per week, which amounts to approximately $60 per year or $3,120 over 10 years, with some users reporting monthly options as well R1R18R28R53.
Does Calculator₊ have ads?
Yes, Calculator₊ has a significant number of ads, which many users find intrusive, frequent, and disruptive to the calculation process R5R29R43R47.
Are there issues with the free trial?
Yes, some users report that the free trial period stated in the app description (e.g., 1 month) differs from the actual trial period (e.g., 3 days) confirmed by Apple, leading to unexpected charges R5R97R104.

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. [R9] 5/5 · US Always use this app!!! Easy to use and have had fo many years!: You will love it
  2. [R11] 5/5 · US Excellent tool: Very handy tool. Love how easy it is to use and at my fingertips whenever I need it!
  3. [R24] 5/5 · US Fast, fun accurate: The real beauty is its ease of use. I love it CLDK
  4. [R25] 5/5 · US Yes / I like it!!!!: Fast, easy to use- perfect
  5. [R8] 4/5 · US Great Calculators: This App Has Great Calculators And Features Such As That It Allows You To Upload A Math Problem Via Photo, For A Price; My Only Issue Is That That Price Is Too Much For An App That I Use On Occasion. I Already Have ChatGPT And So Do Millions Of People, So The Price For This App Is Not Worth It. If It Were, Say, $25 For A Yearly Subscription, Then Yes, Definitely Would Subscribe.
  6. [R10] 5/5 · US Effective and efficient.: As a business leader and Management Consultant, This is a great application. It does all science related processes and various non-scientific tasks well. Quality sustained; just an overall well rounded elementary tool. Highly recommend it!!!
  7. [R59] 5/5 · US Calculator: Excellent free app. I like how you convert from basic calculator to scientific calculator simply by rotating the screen. Can’t beat it!
  8. [R2] 5/5 · US Appreciative: Large Fonts Are Very Helpful!
  9. [R5] 1/5 · US Not Worth Your Time: Shouldn’t have to sift through a million pop ups for a calculator app just to be able to use it. The payment screen for the different memberships also seems intentionally deceiving in my opinion with their “continue for free” button leading you to checkout for their free trial + subscription and the continue without adds option barely visible in the upper corner. Do better. Un
  10. [R29] 1/5 · US ADS: I don’t like ads,there are so much ads!
  11. [R43] 1/5 · US SCAM with ads: There is no reason my CALCULATOR should have ads... definitely use the "Calculator with History" or literally any other calculator that doesnt want you to pay a RIDICULOUS monthly subscription for a CALCULATOR!!!
  12. [R47] 1/5 · US Ads: Too. Many. Ads
  13. [R1] 1/5 · US For a Calculator?: Why would I ever pay a reoccurring subscription…even a penny…for a calculator. Get out of here with this $5.99. 🙄
  14. [R18] 1/5 · US Seriously?: I accidentally tapped on something and it wants to charge me six dollars a month for a calculator? This thing does nothing that you can’t get free very easily.
  15. [R28] 2/5 · US Not even remotely worth it.: $60/yr for a calculator with scant more features than Apple’s own calculator? No thanks. This app at most is worth a single purchase of about $2 and certainly NOT worthy of a subscription. The dev is probably relying on the fact that many people forget about their subscriptions so the dev can quietly pocket undeserved money. This isn’t what Steve Jobs had in mind w
  16. [R22] 2/5 · US BROKEN running as a side-Widget: As side-screen widget.. Currency decimal / comma usage is wrong. Also, number entry severely lags responding as widget. Both work fine only when NOT running as a side Widget. iPadOS26. ** Currency usage set for “System Default”, which for me is decimal for fraction, and comma for thousands. Using as Widget the calculator shows the opposite of that. ** Numeric e
  17. [R79] 1/5 · US Crashes constantly after new update: This is a calculator that charges you a weekly subscription to use it! A calculator 😂. Even after you pay there are constant pop-up ads every few 30 secs.
  18. [R98] 2/5 · US Recently not great: I’ve used this app for nearly a decade and it’s never disappointed. However, after they overhauled the app there’s a delay of about 10-30 seconds to get into the app upon launching. I’m assuming it’s to check if my subscription is valid (I pay yearly it shouldn’t check every time). By the time I get into the app I forget what I’m trying to calculate. The ability to open a suppo
  19. [R173] 3/5 · US It was good…: Used to be great. Even if I have a paid subscription if there is low wifi or cellular, takes 20 seconds to open, sometimes doesn’t open at all. It’s ad tracking.
  20. [R7] 5/5 · US App bug: I genuinely love your product and have been using the paid version for several years, but for about a month now, an annoying bug has appeared: if the answer to a division problem is a repeating decimal, it doesn't display in the answer line; it just shows "0e0." You have to click on the calculation history to see the actual result. Please fix this; it's inconvenient. · translated
  21. [R369] 3/5 · GB Missing basic feature: Just adding my voice to the chorus of those lamenting the absence of the 'constant' function. Apps which seek to replace hardware usually match or exceed the performance capabilities of that hardware. The constant function has been a feature of even the cheapest and least sophisticated calculators since they emerged in the 70s as I recall (my Dad brought one home from work,
  22. [R379] 3/5 · GB BRING BACK KEYBOARD SUPPORT: FOR THE LOVE OF GOD PLEASE!!!! I AM RE-SUBMITTING THIS REVIEW as after I have waited YET ANOTHER few updates and still the keyboard support has not been reinstated. Not everyone uses their iPad solely touchscreen. I am a desk worker who uses keyboard and mouse, it used to work flawlessly and was removed? Why??? PLEAE RESPOND TO THIS REVIEW DEVELOPER! I have been using
  23. [R19] 4/5 · US Complaint: Why does it make me pay it is just math
  24. [R26] 1/5 · US sucks.: you will have to pay for it, just get any other calculator please.
  25. [R30] 1/5 · US Must pay: I do not like this calculator anymore because I have to pay for it now it used to be free
  26. [R14] 1/5 · US I have a problem: Download and liked it so much paid for it . Got a new phone and I could no longer download and use what I already paid for.
  27. [R38] 1/5 · US Scam: I already ordered this app, but they are saying that I didn’t order it when I am paying monthly. What type of nonsense is this?
  28. [R13] 1/5 · US Just got the thing: Why u demand review? Just downloaded and opened for first time.
  29. [R40] 1/5 · US Don’t beg for a review: It’s a calculator, but for some reason it wants to track activity across websites.
  30. [R46] 1/5 · US Scam: They make you give a review before making you purchase a plan and make it hard to use with ads, horrible
  31. [R331] 3/5 · GB Chloe‘s advice: I like it but why is it so special and you keep asking me to rate it and give reviews but I am certainly not I’ve already given you three stars and that’s enough
  32. [R12] 5/5 · US Better: Pretty much just calculator but better
  33. [R31] 2/5 · US Can ur limit be 2^1024 - 2^971?: i like the look of those buttons and screens but i dont like the look of that limit, the limit is very low. cant do high number powers very well like 10^308, 150!, 2^768
  34. [R466] 3/5 · GB Good but there’s bad things: It’s bad bc it don’t help with algebra for my sister
  35. [R502] 3/5 · CA Good but annoying for big calculations: Every time I do a big calaculation it just gives algebraic answers instead of the number
  36. [R64] 3/5 · US Don’t recommend: This calculator is not helpful because you have to pay for some stuff and there are ads VERY annoying 😤and I would have put 5 or 4 stars.
  37. [R111] 1/5 · US why i uninstalled: what type of calculator needs ads on it! and it try's to make me spend money every time i open the app and its SOOO ANNOYING
  38. [R53] 1/5 · US $3,120: That’s how much this calculator will cost you for the first 10 years. $6 a WEEK for a calculator?
  39. [R97] 1/5 · US Misleading “free” option: This is a decent enough calculator on its own. However, you will be prompted to subscribe for a monthly fee (for a calculator?) or choose the “free” option. But “free” is only free for 3 days and then you will be charged. There is an ad supported version, but they make that option difficult to locate.
  40. [R104] 1/5 · US Free trial period different than stated in app description/ details: App description and details state 1 month free trail, then usd5.99 weekly fee. Confirmation email from apple state 3 day free trial, then usd5.99 weekly fee. If one misses the email and does not check cc charges during the 1 month - surprise billings for each week starting 3 days after downloading! Apple denied refund claim

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