# Calculator vs Calculator HD Pro

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). Calculator HD Pro's advantage is ads (none vs shown) and update cadence (every 2 months vs every 13 months). On rating, device support and iOS requirement there is nothing between them.

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 4.7. That said, the two scores are not equally well evidenced: Calculator HD Pro has 11K ratings behind it against 916, so its average is the more settled of the two. Written reviews point the same way: 80% of Calculator's written reviews are positive against 95% of Calculator HD Pro's.

Calculator ships an update every 13 months, Calculator HD Pro every 2 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Calculator | Calculator HD Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [4.7 (916 ratings)](https://appshunter.io/ios/app/calculator/id549782479/reviews) | **[4.8 (11K ratings)](https://appshunter.io/ios/app/calculator-hd-pro/id565023649/reviews)** |
| Number of ratings | 916 | **11K** |
| Positive reviews | 79.8% of reviews | **94.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 11 MB | 48 MB |
| Requires iOS | **15.0** | 15.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Horizon Business, Inc.](https://appshunter.io/developer/431586531) | [Cider Software LLC](https://appshunter.io/developer/465180756) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator/id549782479)

This is a straightforward calculator application designed for ease of use and clear readability. Users can personalize the app's appearance by choosing their preferred background and display themes.

**Highlights:** Easy to use interface, Clear display, Customizable background, Customizable display themes

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💻 Easy to use
- 🎨 Colorful and visually appealing
- 👀 Large, easy-to-read numbers
- 🎯 Accurate calculations
- 🆓 Free app

**What reviewers complain about**

- 🔊 Loud button clicking sound that can't be turned off
- 📏 Lacks landscape mode
- 🔢 No percentage or advanced math functions

**Reported bugs**

- Sound toggle switch doesn't work to turn off sounds
- App crashes or freezes on some devices

**Requested features**

- Add percentage and other advanced math functions
- Allow landscape mode
- Add option to turn off button sounds


### Calculator HD Pro

[App page](https://appshunter.io/ios/app/calculator-hd-pro/id565023649)

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.

**Highlights:** Dual-line display, Multi-line input, Calculation history, Customizable layouts and themes, Full scientific functions, Left-handed mode, VoiceOver accessibility

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Widget | $1.99 | one-time |
| Multiple History Tapes | $1.99 | one-time |

**What reviewers like**

- 🚀 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

**What reviewers complain about**

- 🐛 Bothersome pop-up review requests
- 🐛 Cannot delete lists in history tapes
- 🐛 Repeated rate and review pop-ups

**Reported bugs**

- Cannot delete lists in history tapes
- Ads still appear after purchasing full version

**Requested features**

- Add binary, decimal, and hex conversion
- Ability to manually sort result lines
- Add a tax calculation button


## Frequently asked questions

### Is Calculator free?

Calculator is free to download, with no in-app purchases.

### Is Calculator HD Pro free?

Calculator HD Pro costs $9.99, and also offers in-app purchases.

### Which has better reviews, Calculator or Calculator HD Pro?

Calculator HD Pro is rated higher. Calculator averages 4.7 out of 5 from 916 ratings, while Calculator HD Pro averages 4.8 from 11K ratings.

### Do Calculator or Calculator HD Pro have ads?

Calculator shows ads; Calculator HD Pro does not.

### Which is updated more often, Calculator or Calculator HD Pro?

Calculator ships an update every 13 months, and Calculator HD Pro every 2 months. Most recently, Calculator was updated on October 23, 2026 and Calculator HD Pro on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*