# Calculator· vs Calculator HD Pro

The clearest difference is price: Calculator· at Free against Calculator HD Pro's $9.99. Calculator· also leads on ratings volume (34K vs 11K). Calculator HD Pro's advantage is ads (none vs shown) and review sentiment (95% vs 84%). On rating, update cadence, in-app purchases and monetization model there is nothing between them.

Calculator· is free to download; Calculator HD Pro costs $9.99 up front. Calculator· sells 3 in-app purchases, starting at $0.99 per month 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 — 4.9 for Calculator· against 4.8 for Calculator HD Pro. Both are backed by a comparable volume of ratings — 34K and 11K respectively. Written reviews are what separate them: 84% 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 October 26, 2026.

## The numbers

| Metric | Calculator· | Calculator HD Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.9 (34K ratings)](https://appshunter.io/ios/app/calculator/id554836784/reviews)** | [4.8 (11K ratings)](https://appshunter.io/ios/app/calculator-hd-pro/id565023649/reviews) |
| Number of ratings | **34K** | 11K |
| Positive reviews | 84.3% of reviews | **94.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 47 MB | 48 MB |
| Requires iOS | **15.0** | 15.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tim O's Studios, LLC](https://appshunter.io/developer/412839685) | [Cider Software LLC](https://appshunter.io/developer/465180756) |

## What reviewers say

### Calculator·

[App page](https://appshunter.io/ios/app/calculator/id554836784)

This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.

**Highlights:** Basic arithmetic operations, Percentage calculations, Multiple color schemes, Copy results, Square, square root, inverse functions, iPad Split View support, Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade App | $0.99 | per month |
| Upgrade App | $4.99 | per year |
| Upgrade App | $1.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Quick and responsive
- 💡 Percentage function works well
- 👍 Large, clear buttons
- 👍 Straightforward, no-frills design

**What reviewers complain about**

- 🔋 Frequent ads can be distracting
- 🐛 Occasional crashes or freezes
- 🔒 Lack of customization options
- 💡 No backspace/undo function
- 💡 Missing advanced features like memory

**Reported bugs**

- Crashes when performing long calculations
- Freezes when opening the app
- Incorrect results for some complex calculations

**Requested features**

- Add a backspace/undo button
- Implement a history/memory feature
- Provide more customization options
- Reduce frequency of ads


### 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 in-app purchases available.

### 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· is rated higher. Calculator· averages 4.9 out of 5 from 34K 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 3 months, and Calculator HD Pro every 2 months. Most recently, Calculator· was updated on October 26, 2026 and Calculator HD Pro on October 26, 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.*