Comparison

Calculator⁼ vs Calculator HD Pro Lite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calculator⁼

This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.

Highlights
  • Basic & Scientific Calculator
  • Live Currency Converter
  • History Tape
  • Equation Edit Function
  • Degrees or Radians Calculation
  • Memory Banks
Features
Read full description

Calculator is a clean, easy-to-use calculator app for everyday math and more. It handles basic calculations and scientific functions when you need them and keeps a history of your past results so you can quickly go back and check or reuse them. With its classic design, it feels familiar and straightforward—perfect for quick sums at work, school, or home. AVAILABLE FOR FREE • Basic & Scientific Calculator • Great Visibility; Big buttons for easy calculations • Live Currency Converter; get exchange rate prices • History Tape; Track all calculations, taxes, and expenses • Equation edit function • Calculate with Degrees or Radians • Memory Banks • Choose your Decimal Notation • Set the Number of Decimals • Available in 12 languages • Made for iPad & iPhone • Support Split View & Dark Mode BASIC AND SCIENTIFIC Rotate your device to access all scientific buttons. Or if you prefer calculating in portrait mode, simply swipe left. YOUR EXPERIENCE IS IMPORTANT TO US! As your experience is important to us, we’re happy with your feedback, questions, and suggestions. Please share any support as our team is always ready to help via support@impalastudios.com Mathematical Operations Addition, Subtraction, Division, Multiplication, Percentages, Square, Cubic Exponent, Nth Exponent, Square Root, Cubic Root, Nth Root, Engineering Exponent, Factorial, Power of Two, Power of Ten, Power of E, Natural Logarithm, Common Logarithm, Binary Logarithm, Sine, Cosine, Tangent, Arc Sine, Arc Cosine, Arc Tangent, Hyperbolic Sine, Hyperbolic Cosine, Hyperbolic Tangent, Hyperbolic ArcSine, Hyperbolic Arc Cosine, Hyperbolic ArcTangent, Multiplicative Inverse, Random Number Input LOVING CALCULATOR? Please show your support by rating us! Thank you. Calculator (C) 2011 Impala Studios Terms & Conditions: https://impalastudios.com/terms Privacy Policy: https://impalastudios.com/privacy

About

Calculator HD Pro Lite

This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.

Highlights
  • Dual-line display
  • Calculation history
  • Full scientific functions
  • Customizable layouts and themes
  • Big buttons
  • Email history
Features
Read full description

A colorful calculator with big buttons, comprehensive features, and extensive customization. Used by millions. Supported by ads. SEE EVERY STEP ・Dual-line display - shows your input and result simultaneously ・Multi-line input for long equations ・Tap & hold to move the cursor or copy and paste where you want SAVE YOUR WORK ・History saves every calculation with time and date ・Label important calculations for easy reference ・Email single calculations or complete history ・Swipe down to review previous work CUSTOMIZE EVERYTHING ・6 layouts including extra-large button options ・10 color themes plus Dark Mode ・Adjustable font size and bold text ・Left-handed mode ・Show or hide features you don't need SCIENTIFIC FUNCTIONS ・Full scientific calculator when needed ・Memory buttons with values displayed ・Percentage and backspace buttons ・Automatic scientific notation ・VoiceOver accessibility OPTIONAL IN APP PURCHASES ・Today View Widget (iOS 17 and below) ・Multiple History Tapes ADDITIONAL FEATURES ・Customizable button symbols and decimal settings ・Multiple backspace button styles ・iPad Split View and 3D Touch support ・Gesture controls for quick access URL Scheme: calculatorhdprofree://

Screenshots

Calculator⁼4 screens
Calculator HD Pro Lite4 screens

Verdict

The call

Calculator⁼ and Calculator HD Pro Lite both sit at 4.6 stars, but that hides the real split: 78% of Calculator HD Pro Lite's written reviews are positive against 36% of Calculator⁼'s. Calculator HD Pro Lite also leads on in-app purchases (none vs 8). Calculator⁼'s advantage is update cadence (monthly vs every 2 months) and ratings volume (358K vs 51K). On price, rating, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calculator⁼ sells 8 in-app purchases, starting at $0.49 per 7 days. Calculator HD Pro Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Calculator⁼ against 4.6 for Calculator HD Pro Lite. That said, the two scores are not equally well evidenced: Calculator⁼ has 358K ratings behind it against 51K, so its average is the more settled of the two. Written reviews are what separate them: 36% of Calculator⁼'s written reviews are positive against 78% of Calculator HD Pro Lite's.

UpkeepUpdate frequency

Calculator⁼ ships an update monthly, Calculator HD Pro Lite every 2 months. Both last shipped on September 24, 2026.

Scorecard5 real differences · 5 level
Calculator⁼ versus Calculator HD Pro Lite: the parameters behind the verdict, then further details
ParameterCalculator⁼Calculator HD Pro Lite
PriceFreeFree
Rating4.6 (358K ratings)4.6 (51K ratings)
Positive reviews36.1% of reviews77.6% of reviews — better
Number of ratings358K — better51K
Update frequencyMonthly — betterEvery 2 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.2
Further details — not scored
Size159 MB47 MB
Age rating4+4+
DeveloperImpala StudiosCider Software LLC

Customer experience

Calculator⁼

All ratings358,262 ratings
Positive91.4%
Neutral3.7%
Negative4.9%
Written reviews796 reviews
Positive36.1%
Neutral6.8%
Negative57.2%

Calculator HD Pro Lite

All ratings51,312 ratings
Positive91.9%
Neutral4.0%
Negative4.2%
Written reviews447 reviews
Positive77.6%
Neutral5.8%
Negative16.6%

User reviews

Calculator⁼

From 358K App Store ratings

What we love

  • 👍 Easy to use
  • 📊 Helpful history feature
  • 💻 Versatile (basic and scientific)
  • 🔍 Clear display and large buttons

Room to improve

  • 🤖 Intrusive and excessive ads
  • 💰 Subscription model for ad-free version
  • 🔄 Ads interrupting calculations
  • 🕰️ Slow performance due to ads

Calculator HD Pro Lite

From 51K App Store ratings

What we love

  • 👍 Easy to use
  • 📝 Keeps calculation history
  • 💡 Customizable layout and themes
  • 🔢 Large, clear numbers
  • 🧮 Variety of functions (basic, scientific, etc.)

Room to improve

  • 💢 Intrusive ads, especially between calculations
  • 🙄 Ads that are difficult to close
  • 🤦‍♂️ Ads that interrupt workflow
  • 🤑 Expensive to remove ads
  • 🚫 Gambling ads

Bugs and requests

Calculator⁼

Reported bugs

3 issues
  • History not always showing all entries
  • Ads covering up parts of the screen
  • Inability to close full-screen ads

Requested features

4 requests
  • Add fraction button
  • Option to clear calculation history
  • Ability to copy/paste results
  • Customizable layout and themes

Calculator HD Pro Lite

Reported bugs

3 issues
  • Calculation errors with very large numbers
  • Crashes after recent update
  • Decimal point displayed as comma

Requested features

5 requests
  • Dark mode option
  • Ability to sync calculation history across devices
  • More advanced math functions (e.g. dms/dd)
  • Customizable button layout
  • Ability to disable ads without paying

In-app purchases

8 purchases

Calculator⁼

Subscriptions6
  • Weekly Premium Access3 Days trial$0.497 Days
  • Monthly full access3 Days trial$1.991 Month
  • Weekly Premium Access3 Days trial$1.997 Days
Show 3 more
  • Limited Time Offer$4.991 Year
  • Premium Yearly3 Days trial$5.991 Year
  • Annual Premium Access$9.991 Year
One-time2
  • Retro Theme Calculator'$0.99
  • Lifetime Full Access$14.99
None

Calculator HD Pro Lite

No in-app purchases

Questions

Is Calculator⁼ free?
Calculator⁼ is free to download, with in-app purchases available.
Is Calculator HD Pro Lite free?
Calculator HD Pro Lite is free to download, with no in-app purchases.
Which has better reviews, Calculator⁼ or Calculator HD Pro Lite?
Calculator⁼ and Calculator HD Pro Lite are both rated 4.6 out of 5 on the App Store, from 358K and 51K ratings respectively.
Do Calculator⁼ or Calculator HD Pro Lite have ads?
Both Calculator⁼ and Calculator HD Pro Lite show ads.
Which is updated more often, Calculator⁼ or Calculator HD Pro Lite?
Calculator⁼ ships an update monthly, and Calculator HD Pro Lite every 2 months. Most recently, Calculator⁼ was updated on September 24, 2026 and Calculator HD Pro Lite on September 24, 2026.

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