# Calculator HD Pro vs Calculator⁻

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.

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. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Calculator HD Pro | Calculator⁻ |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.8 (11K ratings)](https://appshunter.io/ios/app/calculator-hd-pro/id565023649/reviews)** | [4.4 (3.6K ratings)](https://appshunter.io/ios/app/calculator/id1327796464/reviews) |
| Number of ratings | **11K** | 3.6K |
| Positive reviews | **94.9% of reviews** | 52.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 48 MB | 4 MB |
| Requires iOS | 15.2 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cider Software LLC](https://appshunter.io/developer/465180756) | [UniCom Technology](https://appshunter.io/developer/1270764210) |

## What reviewers say

### 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


### Calculator⁻

[App page](https://appshunter.io/ios/app/calculator/id1327796464)

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.

**Highlights:** Basic arithmetic operations, Percentage calculations, Record and recall results, Customizable colors, Touch sound option

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient calculations
- 💡 Retro design
- 👍 Simple and straightforward

**What reviewers complain about**

- 🐛 Decimal point issues
- 🐛 Incorrect calculations
- 🐛 Broken buttons
- 🔍 Confusing button layout

**Reported bugs**

- 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**

- Backspace button
- Percentage button that works properly
- Arrange buttons in standard calculator layout


## Frequently asked questions

### Is Calculator HD Pro free?

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

### Is Calculator⁻ free?

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

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

Calculator HD Pro is rated higher. Calculator HD Pro averages 4.8 out of 5 from 11K ratings, while Calculator⁻ averages 4.4 from 3.6K ratings.

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

Calculator⁻ shows ads; Calculator HD Pro does not.

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

Calculator HD Pro ships an update every 2 months, and Calculator⁻ every 2 months. Most recently, Calculator HD Pro was updated on October 30, 2026 and Calculator⁻ 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.*