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Updated July 2026 · real, multi-region App Store reviews
Head-to-head

Calculator vs Calculator HD Pro Lite

Calculator 4.5★ · Free + IAP 40
Winner Tie
Calculator HD Pro Lite 4.6★ · Free to download 45

Both Calculator and Calculator HD Pro Lite are plagued by intrusive ads in their free versions, making neither a clear winner, but Calculator HD Pro Lite offers more advanced features for those willing to pay to remove ads.

Full reviews: Calculator · Calculator HD Pro Lite

Both Calculator and Calculator HD Pro Lite offer basic and some advanced calculator functions, but user experience for both is severely hampered by frequent and intrusive advertisements. While Calculator HD Pro Lite boasts a slightly higher lifetime rating and more advanced features, its ad implementation is just as disruptive as Calculator's, leading many users to delete both apps.

Head to head

Features and Functionality edge: Calculator HD Pro LiteR1R2R14R17
Calculator Users appreciate Calculator for its basic functionality, helpfulness in school, and aesthetic customization options like themes and backgrounds R2R14R17R26. However, some find it too basic and lacking advanced features like percentages or a backspace button R1.
Calculator HD Pro Lite Calculator HD Pro Lite is praised for its scientific calculator capabilities, history tracking, and arc trigonometric functions R103R109. Users also like its customizable layout, key colors, and notation formats R62. However, some users note the absence of memory functions or a decimal symbol .
Ease of Use edge: Calculator HD Pro LiteR2R5R8R24
Calculator Many users find Calculator helpful and easy to use for basic math R2R58. However, some report it being laggy, confusing to navigate, or having buttons that are not big enough R5R8R24.
Calculator HD Pro Lite Calculator HD Pro Lite is generally considered easy to use and intuitive, with a good display . Some users, however, find it not easy enough to get around or note issues like needing to push clear twice .
Reliability and Performance tieR3R5R15R58
Calculator While some users describe Calculator as fast and working great R3R58, others report it being laggy or slowing down due to ads R5R15.
Calculator HD Pro Lite Calculator HD Pro Lite is generally seen as performing fantastically and working well . However, some users experience freezing, especially due to ads, or issues with specific functions like squaring negative numbers .
Price and Value (Free vs. Paid) tieR4R10R13R14
Calculator Calculator is free and offers themes, which some users appreciate R14R26. However, the overwhelming sentiment is that the app's value is destroyed by excessive, intrusive, and sometimes deceptive ads R4R10R13R19.
Calculator HD Pro Lite Calculator HD Pro Lite is free to download, and users acknowledge its effectiveness and history feature . However, like App A, its free experience is severely degraded by frequent, full-screen, and intrusive ads that interrupt calculations . Some users feel blackmailed into paying to remove ads .
Pick Calculator if

You need a very basic calculator for simple operations and are willing to tolerate frequent ads, or if you are specifically drawn to its theme customization options R14R17R26.

Pick Calculator HD Pro Lite if

You require a scientific calculator with advanced functions like arc trigonometry, history tracking, and customizable layouts, and are prepared to pay to remove ads for an uninterrupted experience R62R103R109.

Evidence note: The evidence for both apps is heavily skewed towards negative feedback regarding ads, especially in recent reviews. Positive reviews for both often praise basic functionality or specific features, but rarely address the ad issue directly, or state a wish for no ads . The free-to-download nature of both apps means many users are experiencing the ad-supported version, leading to significant frustration.

Frequently asked

Do these calculator apps have ads?
Yes, both Calculator and Calculator HD Pro Lite are heavily criticized for having frequent, intrusive, and often full-screen ads that interrupt calculations and degrade the user experience R4R10R13R19.
Which app is better for scientific calculations?
Calculator HD Pro Lite appears to be better for scientific calculations, as users specifically mention its scientific calculator functions, arc trigonometric functions, and ability to handle complex calculations R75R103R109R117.
Can I customize the appearance of these calculators?
Yes, Calculator allows users to change themes and choose from many different backgrounds and 'skin tones' R14R17R26. Calculator HD Pro Lite also offers configurability to select key colors, notation format, and specific key symbols R62.

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. [R1] Calculator 2/5 · US We need to talk: This is a stupid calculator even my parents calculator is better than this so yeah
  2. [R2] Calculator 5/5 · US Calc: Very helpful
  3. [R14] Calculator 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!!!!!
  4. [R17] Calculator 5/5 · US Review: It is so good to calculate and it can change themes
  5. [R5] Calculator 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
  6. [R8] Calculator 5/5 · US One more thing: It is a little confusing
  7. [R24] Calculator 3/5 · GB Buttons not big enough: The buttons are NOT big enough
  8. [R3] Calculator 3/5 · US It was ok ig?: It worked great for everything but a little to much ads.
  9. [R15] Calculator 3/5 · US Too many commercials: This app started out good but all of a sudden they way too many commercials slowing me down badly otherwise it’s a good calculator,but I got another one with less interruptions.
  10. [R58] Calculator 5/5 · US The lovely thing: I am so glad I got this app because it can help you get your math skills really good and it is so fast
  11. [R4] Calculator 1/5 · US Too many ads: lol it gives me an ad every time I click the c function. Useless
  12. [R10] Calculator 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.
  13. [R13] Calculator 1/5 · US Do not download this adfest: Annoying intrusive ads. This developer should be ashamed.
  14. [R19] Calculator 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
  15. [R75] Calculator HD Pro Lite 3/5 · US works great when not interrupted: this scientific calculator works just fine when it is available. but sometimes ads interrupt my work and I lose my calculation strings
  16. [R103] Calculator HD Pro Lite 5/5 · US Arc Trig functions: Arc functions (to determine the angle of a slope) that are not present in other calculator apps.
  17. [R109] Calculator HD Pro Lite 5/5 · US Simple to use: Easily computes all scientific calculations I have needed to do.
  18. [R117] Calculator HD Pro Lite 5/5 · US Great app: The best basic and scientific calculator ever
  19. [R26] Calculator 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
  20. [R62] Calculator HD Pro Lite 5/5 · US My favorite calculator app for many years: Great calculator app. Does everything I want and more. I really like the layout and the configure ability to select key colors, notation format, even specific key symbols.

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