Calculator HD Pro vs Calculator⁻
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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://
Calculator⁻
A straightforward calculator app designed for simplicity, offering basic arithmetic operations and percentage calculations. It allows users to record and recall past results, customize colors, and enable touch sounds for a personalized experience.
- Basic arithmetic operations
- Percentage calculations
- Record and recall results
- Customizable colors
- Touch sound option
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It is a simple and easy calculator. It is a simple calculator with no complex functions at all. Features: Addition, subtraction, multiplication, division, percent operation Recording and recalling calculation results The numbers, operators, parentheses, results Custom colors Use touch sound Very useful for school children
Screenshots
Verdict
The clearest difference is price: Calculator⁻ at Free against Calculator HD Pro's $9.99. Calculator⁻ also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.2). Calculator HD Pro's advantage is review sentiment (95% vs 52%) and ads (none vs shown). On update cadence 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
Calculator⁻ is free to download; Calculator HD Pro costs $9.99 up front. Calculator HD Pro sells 2 one-off in-app purchases. Calculator⁻ asks for nothing beyond the download.
Calculator HD Pro holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 11K and 3.6K respectively. Written reviews point the same way: 95% of Calculator HD Pro's written reviews are positive against 52% of Calculator⁻'s.
Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 29, 2026.
| Parameter | Calculator HD Pro | Calculator⁻ |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.8 (11K ratings) — better | 4.4 (3.6K ratings) |
| Positive reviews | 94.9% of reviews — better | 52.0% of reviews |
| Number of ratings | 11K — better | 3.6K |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Cider Software LLC | UniCom Technology |
Customer experience
Calculator HD Pro
Calculator⁻
User reviews
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
Calculator⁻
From 3.6K App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Efficient calculations
- 💡 Retro design
- 👍 Simple and straightforward
Room to improve
- 🐛 Decimal point issues
- 🐛 Incorrect calculations
- 🐛 Broken buttons
- 🔍 Confusing button layout
Bugs and requests
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
Calculator⁻
Reported bugs
3 issues- Decimal point problem: .5 becomes 5
- Button that should be 7 shows as 9 and gives 9 when used
- Percentage button does not work correctly
Requested features
3 requests- Backspace button
- Percentage button that works properly
- Arrange buttons in standard calculator layout
In-app purchases
Calculator HD Pro
- Widget$1.99
- Multiple History Tapes$1.99
Calculator⁻
No in-app purchases
Questions
Is Calculator HD Pro free?
Is Calculator⁻ free?
Which has better reviews, Calculator HD Pro or Calculator⁻?
Do Calculator HD Pro or Calculator⁻ have ads?
Which is updated more often, Calculator HD Pro or Calculator⁻?
Other comparisons
