Calculator Max vs Calculator HD Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator Max
This app offers a comprehensive suite of calculation tools, from basic arithmetic to advanced scientific functions. It features a history tape for easy access and reuse of entries, and a unique scribble pad for handwritten notes and equation solving on iPads. Enjoy a clean interface, multitasking support, and customizable themes.
- Basic and scientific calculators
- History tape with export options
- Handwritten notes and equation solving
- Multitasking support on iPad
- Customizable themes and app icons
- Home Screen and Lock Screen widgets
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Calculator Max makes both simple and complex calculations easy. It offers all calculators you’ll ever need in one carefully designed, uncluttered and easy-to-use package. Switching between calculators is buttery-smooth and natural. The basic calculator with big buttons swiftly handles everyday tasks. The more advanced scientific calculator is loaded with all important mathematical functions and constants. A history tape with your entries is comfortably accessible in all calculator modes. Thanks to it, you never lose track of what you’ve entered and the entries can be reused effortlessly in your calculations. The tape can also be exported to common formats and shared or printed. On the large screen of any iPad it is pure joy to make handwriting notes or draw your ideas right in the app. Write down any math equation and let the app calculate it for you in the blink of an eye. Or reuse any handwriting which you can easily convert to editable text. ————————— WHAT YOU GET ————————— /// POWERFUL CALCULATOR /// — Basic calculator with big buttons — Scientific calculator packed with functions and constants — History tape with the calculations at your fingertips in all modes — Extensive rounding options (e.g. two decimal places for accounting) — Up to 5 memory slots for frequent numbers — Plain Text, Monospaced Text, CSV, PDF and image export formats — Advanced export, share and print options — Scribble Pad on iPad for easy math equations solving, handwritten notes and sketches /// PRODUCTIVE WORKFLOW /// — Side tape layouts for easier long records handling — Clean and uncluttered interface with refined haptic feedback — Multitasking support on iPad for side-by-side work — External keyboard support for even faster input and app control — Universal app for all your iPhones, iPads and Macs — User interface precisely adapted for each device capabilities /// FAST ACCESS /// — Home Screen widgets with last calculations and memory — Widgets for direct access from the Lock Screen — Control Center and Lock Screen fast access buttons /// MIGHTY SCRIBBLE PAD /// — The right place for your quick notes and sketches — Easily calculates any written down math equation — Recognizes your handwriting and converts it to editable text — Fully-fledged notebook with unlimited number of paper sheets — Exportable as text, image or PDF — Optimized for your finger as well as Apple Pencil — Support for LAMY and Adonit styluses (on iPad) — Available on all iPad models /// EXTENSIVE CUSTOMIZATION /// — Handcrafted design themes with dark mode support — Loads of app icons you can easily choose from the best one for your Homescreen — Carefully selected sound sets Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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 Max at Free against Calculator HD Pro's $9.99. Calculator HD Pro's advantage is review sentiment (95% vs 55%) and rating (4.8 vs 4.3). On update cadence, ads, in-app purchases and monetization model 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 Max is free to download; Calculator HD Pro costs $9.99 up front. Calculator Max sells 2 in-app purchases, starting at $4.99 per year and Calculator HD Pro sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Calculator HD Pro holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Calculator HD Pro has 11K ratings behind it against 1.9K, so its average is the more settled of the two. Written reviews point the same way: 55% of Calculator Max's written reviews are positive against 95% of Calculator HD Pro's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.
| Parameter | Calculator Max | Calculator HD Pro |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 4.3 (1.9K ratings) | 4.8 (11K ratings) — better |
| Positive reviews | 55.1% of reviews | 94.9% of reviews — better |
| Number of ratings | 1.9K | 11K — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 126 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Pavel Kozarek | Cider Software LLC |
Customer experience
Calculator Max
Calculator HD Pro
User reviews
Calculator Max
From 1.9K App Store ratingsWhat we love
- 🚀 Easy to use
- 📝 Useful note-taking feature
- 💾 Tape/history feature
- 👍 Clean and intuitive interface
- 🎨 Customizable appearance
Room to improve
- 🐛 Compatibility issues with newer iOS versions
- 📤 Lack of export/sharing options for tape/history
- 🔍 Difficulty finding settings
- 🔀 Sensitive orientation switching
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 Max
Reported bugs
3 issues- Crashes after iOS 26 update
- Tape not visible/functional on iPhone
- Calculator buttons/layout issues in split-screen mode
Requested features
5 requests- Left-handed mode
- Backspace/edit functionality
- Scientific calculator mode with tape
- Tape annotation/labeling
- Cloud/Dropbox sync for tape
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 Max
- Calculator Max Pro7 Days trial$4.991 Year
- Calculator Max Pro$3.99
Calculator HD Pro
- Widget$1.99
- Multiple History Tapes$1.99
Questions
Is Calculator Max free?
Is Calculator HD Pro free?
Which has better reviews, Calculator Max or Calculator HD Pro?
Do Calculator Max or Calculator HD Pro have ads?
Which is updated more often, Calculator Max or Calculator HD Pro?
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