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 multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

Highlights
  • Math Photos Solver
  • Handwriting Recognition
  • AI Math Problem Solver
  • Mathematical Display
  • Equation Solvers
  • 2D Graphing
  • Algebraic Functions
Features
Read full description

◉ Over 11,000,000 Downloads Worldwide ◉ Top Free Utilities Apps in US, UK, AUS, CAN, GER,... ◉ Rated & Reviewed on ILoveFreeSoftware.com FREE Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,... Calculator # – The free, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy wide ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, engineers, and math students. Calculator # makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes! ◉ Official Website: http://iPhoneCalculator.com ◉ ADVANCED FEATURES: ▸ Math Photos Solver * ▸ Handwriting Recognition * ▸ Math Problem Solver (AI) * ◉ GENERAL FEATURES: ▸ Universal Calculator App ▸ Support All the Latest Devices ¹ ▸ Support Multitasking (iPad) ▸ Support Wireless KB ² ▸ Mathematical Display ▸ Edit & Export Expression/Result ▸ History Tape View ▸ Basic Calculations (+, -, x, ÷, %, Abs,...) ▸ Advanced Functions (Sin,Cos,Ln,X!, ^, √,…) ▸ 14 Memory Variables (Including X,Y,Z,M) ▸ Assignment Operator ▸ F(x) Customize Functions (F1 Only) ▸ Fraction and Degree/Angle Calculation ▸ Numeric Integral Calculation ▸ Dual Skins (Silver Light & Carbon+) ◉ ALGEBRA FEATURES: ▸ Big Integer & Rational Number (Up to 30!) ▸ Expand and Factor Polynomials ▸ Basic Indefinite integral ◉ EQUATIONS SOLVERS: ▸ Quadratic Equations ▸ System of Linear Equations (2 Unknowns) ◉ 2D GRAPH: ▸ Snap to Points ▸ Smooth Zoom & Transformation ▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0. ◉ MULTIPLE LANGUAGES: ▸ English, Spanish, German, ▸ French, Japanese, Chinese (*) In-App-Purchase is required ¹: Include iPhone 6/6S+ HD Retina Display ²: Standard English KB We love your feedback, Thanks a lot ! Terms of Service: https://iphonecalculator.com/terms-of-service/

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

The clearest difference is in-app purchases: Calculator HD Pro Lite at none against Calculator #'s 6. Calculator HD Pro Lite also leads on review sentiment (77% vs 60%). Calculator #'s advantage is iOS requirement (12.1 vs 15.2). On price, rating, ratings volume and update cadence 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 6 in-app purchases, starting at $1.49 per month. 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. Both are backed by a comparable volume of ratings — 36K and 52K respectively. Written reviews are what separate them: 60% of Calculator #'s written reviews are positive against 77% of Calculator HD Pro Lite's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 27, 2026.

Scorecard4 real differences · 6 level
Calculator # versus Calculator HD Pro Lite: the parameters behind the verdict, then further details
ParameterCalculator #Calculator HD Pro Lite
PriceFreeFree
Rating4.6 (36K ratings)4.6 (52K ratings) — better
Positive reviews59.5% of reviews77.3% of reviews — better
Number of ratings36K52K — better
Update frequencyEvery 2 monthsEvery 2 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better15.2
Further details — not scored
Size57 MB47 MB
Age rating4+4+
DeveloperIncpt.MobisCider Software LLC

Customer experience

Calculator #

All ratings35,876 ratings
Positive90.4%
Neutral3.8%
Negative5.8%
Written reviews467 reviews
Positive59.5%
Neutral6.4%
Negative34.0%

Calculator HD Pro Lite

All ratings51,312 ratings
Positive91.9%
Neutral4.0%
Negative4.2%
Written reviews453 reviews
Positive77.3%
Neutral5.5%
Negative17.2%

User reviews

Calculator #

From 36K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Powerful functionality
  • 💡 Helpful for math classes
  • ⭐ Great for students
  • 👌 Works like a real calculator

Room to improve

  • 🔍 Confusing interface after update
  • 📢 Too many intrusive ads
  • 💰 Paywall for advanced features
  • 🐛 Incorrect calculations
  • 🔇 Loud audio ads

Calculator HD Pro Lite

From 52K 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
  • Crashes when trying to use certain functions
  • Handwriting recognition not working reliably
  • Inability to input negative numbers

Requested features

3 requests
  • Add option to turn off animation
  • Improve ad placement to avoid obstructing usage
  • Provide more transparency on paid features

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

6 purchases

Calculator #

Subscriptions4
  • PRO Upgrade 1 Month3 Days trial$1.491 Month
  • PRO Upgrade 3 Months7 Days trial$2.993 Months
  • PRO + Recognition 1 Month$4.991 Month
Show 1 more
  • PRO + Recognition 3 Months$11.993 Months
One-time2
  • 250 AI Recognition & Queries$0.99
  • 600 AI Recognition & Queries$1.99
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 HD Pro Lite is rated higher. Calculator # averages 4.6 out of 5 from 36K ratings, while Calculator HD Pro Lite averages 4.6 from 52K ratings.
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 every 2 months, and Calculator HD Pro Lite every 2 months. Most recently, Calculator # was updated on October 27, 2026 and Calculator HD Pro Lite on October 27, 2026.

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