Calculator HD++ vs CALC Smart Calculator ±
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator HD++
This application offers a high-precision calculation engine with a user-friendly interface. It allows for real-time result display as formulas are typed, supports multiple undo actions, and enables easy switching between workspaces. Users can also access persistent history, print calculations via AirPrint, and share history via email.
- High precision calculation engine
- Results displayed while typing
- Multiple undo functionality
- Workspace switching
- Persistent history
- AirPrint compatibility
- Email history sharing
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- It is simple, easy to use and well designed - High precision engine - Result is displayed while typing the formula - Multiple undo - Switch between workspaces ! - Persistent history - Specialized keypad for iPhone and iPad - Supports bluetooth keyboard - Right or left-handed mode - Print easily with AirPrint - Share history by e-mail - it is FREE !
CALC Smart Calculator ±
This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.
- Real-time results
- Unit and currency conversions
- Custom functions and constants
- Shareable calculation history
- Landscape mode with tape-roll
- Gratuity calculator
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Why Choose CALC Smart? ► Used by Scientists, Professionals and Students alike ► Apple-Featured: Spotlighted in Utilities and Calculate & Convert. ► User-Loved: Over 10k+ global reviews and 200M+ sessions validate its utility. ► Educator-Certified: Praised by teachers on the Educational App Store for its intuitive UI. Ready for the Latest OS * Multitask on your iPad and use 3D Touch shortcuts. * Search your calculation history with Spotlight. * Widget with history integration. * Apple Watch support, complete with haptic feedback and complications. Top 10 Unique Features ① Real-time results, even with incomplete parentheses. ② Landscape mode for shareable history and tape-roll. ③ Optimized custom keyboard & widget to save space and time. ④ Fast unit and currency conversions—a swipe away. ⑤ Quick gratuity calculator with rounding options. ⑥ Display decimals as fractions with 1/999 precision. ⑦ Create unlimited custom functions and constants. ⑧ Easy expression sharing via link. ⑨ Built-in timer. ⑩ Limitless themes and layouts. Why Users Love CALC * Live Math: Natural input, even for complex calculations. * Swipe Functions: Over 60 advanced math functions just a swipe away. * History: Never lose track of your calculations. * Conversion: 21 categories, plus custom options. Additional Features * Edit on the Fly: Long-press to modify expressions and numbers. * Audio Feedback: Customize tapping sounds. * Styling: Multiple font choices. * Enterprise-Ready: EMM support with MDM & AppConfig. We Listen * Frequent updates based on your feedback. Got a suggestion? Visit our UserVoice page: https://QApps.UserVoice.com Custom Background Tip * Design your own CALC background with images from NASA’s multimedia library: https://nasa.gov/multimedia Terms & Usage * Using this app means agreeing to the standard Terms of Use. Standard Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Calculator HD++ at none against CALC Smart Calculator ±'s 4. Calculator HD++ also leads on iOS requirement (10.0 vs 17.0). CALC Smart Calculator ±'s advantage is ads (none vs shown) and rating (4.8 vs 4.4). On price, review sentiment 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
Both are free to download. CALC Smart Calculator ± sells 4 in-app purchases, starting at $0.99 per 3 months. Calculator HD++ asks for nothing beyond the download.
CALC Smart Calculator ± holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: CALC Smart Calculator ± has 2.4K ratings behind it against 277, so its average is the more settled of the two. Written reviews point the same way: 82% of Calculator HD++'s written reviews are positive against 87% of CALC Smart Calculator ±'s.
Calculator HD++ ships an update monthly, CALC Smart Calculator ± fortnightly. Both last shipped on November 6, 2026.
| Parameter | Calculator HD++ | CALC Smart Calculator ± |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (277 ratings) | 4.8 (2.4K ratings) — better |
| Positive reviews | 81.6% of reviews | 87.2% of reviews — better |
| Number of ratings | 277 | 2.4K — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, Mac, Apple Watch |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 35 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | smalltech sarl | QApps LLC |
Customer experience
Calculator HD++
CALC Smart Calculator ±
User reviews
Calculator HD++
From 277 App Store ratingsWhat we love
- 👍 Easy to use
- 💡 Detailed calculation history
- 🚀 Responsive and fast
- 👍 Helpful haptic feedback
- 👍 Intuitive interface
Room to improve
- 🐛 Settings have missing parameters
- 🐛 Previous calculations won't go away
- 💸 Annoying ads
- 🔍 Difficult to clear history
CALC Smart Calculator ±
From 2.4K App Store ratingsWhat we love
- 💻 Excellent calculator functionality
- 🎨 Beautiful and clean interface
- 🔢 Displays full calculation history
- 🔍 Useful conversion tools
- 🤖 Seamless Apple Watch integration
Room to improve
- 💰 Subscription model introduced
- 🔒 Restricted features behind paywall
- 📊 Calculation bugs and inaccuracies
- 🔄 Unnecessary UI changes frustrate users
Bugs and requests
Calculator HD++
Reported bugs
2 issues- Crashes after recent update
- Incompatibility with Bluetooth keyboards
Requested features
3 requests- Option to remove ads
- Ability to switch to hexadecimal mode
- Larger buttons for easier use
CALC Smart Calculator ±
Reported bugs
3 issues- Calculation errors in certain scenarios
- Forced tutorial popup on every launch
- Unreliable widget functionality
Requested features
4 requests- Ability to easily clear calculation history
- Option to customize button layout
- Support for entering hexadecimal numbers
- Integration with other apps and services
In-app purchases
Calculator HD++
No in-app purchases
CALC Smart Calculator ±
- Quarterly Supporter$0.993 Months
- Quarterly Supporter7 Days trial$1.993 Months
- Annual Contributor$2.991 Year
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- Annual Contributor7 Days trial$5.991 Year
Questions
Is Calculator HD++ free?
Is CALC Smart Calculator ± free?
Which has better reviews, Calculator HD++ or CALC Smart Calculator ±?
Do Calculator HD++ or CALC Smart Calculator ± have ads?
Which is updated more often, Calculator HD++ or CALC Smart Calculator ±?
Other comparisons
