Calculator! vs Calculator HD Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator!
This app offers a versatile calculator experience with both standard and scientific modes. Customize its appearance, use it in any orientation, and access additional tools like a notes tab and calculation history. It's designed for students and professionals needing accurate calculations.
- Standard and scientific calculator modes
- Customizable look (iPad only)
- Portrait and landscape orientation
- Notes and drawing tab
- Calculation history
- AirPrint and email support
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Calculator! is an easy to use, beautifully packaged calculator for your iPad or iPhone that includes both a standard and scientific calculator. Our versatile calculator app allows you to: • Customize the look of the application by changing the leather color and background texture (iPad Only) • Choose between a basic calculator or scientific calculator with more than 30 scientific operations • Use both calculators in portrait or landscape mode • Take notes or draw with your finger on the Notes Tab • View and edit a history of your calculations on the History Tab • Use Airprint to print your notes or your calculation history • Email your calculation history or notes from within the app • View an equation of your current calculations • Calculate with accuracy to more than 75 significant digits • Use parenthesis and nested parenthesis in your calculations We wrote Calculator! to be the perfect calculator for budding math students and professionals alike.
Calculator HD Pro
This app offers a powerful and customizable calculator experience with a dual-line display for seeing input and results simultaneously. Save and organize your calculations with history, labeling, and email options. Personalize layouts, themes, and fonts for a comfortable and efficient user experience.
- Dual-line display
- Multi-line input
- Calculation history
- Customizable layouts and themes
- Full scientific functions
- Left-handed mode
- VoiceOver accessibility
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A colorful calculator with big buttons, comprehensive features, and extensive customization. Used by millions. Completely ad-free. 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: calculatorhdpro://
Screenshots
Verdict
The clearest difference is price: Calculator! at $0.99 against Calculator HD Pro's $9.99. Calculator! also leads on iOS requirement (9.0 vs 15.2). Calculator HD Pro's advantage is review sentiment (95% vs 86%). On rating, ratings volume, update cadence and ads 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
Calculator! costs $0.99 and Calculator HD Pro $9.99 up front. Calculator! sells 1 one-off in-app purchase and Calculator HD Pro sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for Calculator! against 4.8 for Calculator HD Pro. Both are backed by a comparable volume of ratings — 4.3K and 11K respectively. Written reviews are what separate them: 86% of Calculator!'s written reviews are positive against 95% of Calculator HD Pro's.
Calculator! ships an update every 3 months, Calculator HD Pro every 2 months. Both last shipped on November 1, 2026.
| Parameter | Calculator! | Calculator HD Pro |
|---|---|---|
| Price | $0.99 — better | $9.99 |
| Rating | 4.8 (4.3K ratings) | 4.8 (11K ratings) — better |
| Positive reviews | 86.0% of reviews | 94.9% of reviews — better |
| Number of ratings | 4.3K | 11K — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 56 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | 7th Gear | Cider Software LLC |
Customer experience
Calculator!
Calculator HD Pro
User reviews
Calculator!
From 4.3K App Store ratingsWhat we love
- 💰 Reasonably priced
- 📝 Useful note-taking features
- 📊 Keeps a calculation history
- 🎨 Customizable appearance
- 🔍 Helpful log and tracking features
Room to improve
- 🤔 Confusing input box behavior
- 🔍 Lack of graphing features
- 🔍 Missing some scientific calculator buttons
- 🔍 Inconsistent widget behavior
- 🔍 Issues with split-screen and resizing
Calculator HD Pro
From 11K App Store ratingsWhat we love
- 🚀 Significantly better than Apple's calculator
- 👍 Excellent app with great features
- 👍 Flawless app, very useful
- 👍 Fantastic calculator, meets all needs
- 👍 Best calculator app, highly recommended
Room to improve
- 🐛 Bothersome pop-up review requests
- 🐛 Cannot delete lists in history tapes
- 🐛 Repeated rate and review pop-ups
Bugs and requests
Calculator!
Reported bugs
4 issues- Widget doesn't work as expected
- Calculation history not available in portrait mode
- Resizing issues on iPad Pro
- Slow startup times on older devices
Requested features
5 requests- Add unit conversion tools
- Improve calculation expression logic
- Allow notes to be viewed in portrait mode
- Implement a scratch paper area on the right side
- Add ability to sync data across devices
Calculator HD Pro
Reported bugs
2 issues- Cannot delete lists in history tapes
- Ads still appear after purchasing full version
Requested features
3 requests- Add binary, decimal, and hex conversion
- Ability to manually sort result lines
- Add a tax calculation button
In-app purchases
Calculator!
- Calculator$0.99
Calculator HD Pro
- Widget$1.99
- Multiple History Tapes$1.99
Questions
Is Calculator! free?
Is Calculator HD Pro free?
Which has better reviews, Calculator! or Calculator HD Pro?
Do Calculator! or Calculator HD Pro have ads?
Which is updated more often, Calculator! or Calculator HD Pro?
Other comparisons
