# calculator HD⁻ vs Calculator +ㅤ

The clearest difference is monetization model: calculator HD⁻ at free with in-app purchases against Calculator +ㅤ's subscription. calculator HD⁻ also leads on review sentiment (61% vs 46%) and iOS requirement (13.0 vs 15.0). Calculator +ㅤ's advantage is update cadence (fortnightly vs every 6 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. calculator HD⁻ sells 6 in-app purchases, starting at $2.99 per 3 months and Calculator +ㅤ sells 6 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for calculator HD⁻ against 4.6 for Calculator +ㅤ. Both are backed by a comparable volume of ratings — 2.5K and 4.5K respectively. Written reviews are what separate them: 61% of calculator HD⁻'s written reviews are positive against 46% of Calculator +ㅤ's.

calculator HD⁻ ships an update every 6 weeks, Calculator +ㅤ fortnightly. Both last shipped on September 23, 2026.

## The numbers

| Metric | calculator HD⁻ | Calculator +ㅤ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2.5K ratings)](https://appshunter.io/ios/app/calculator-hd/id1485888099/reviews) | **[4.6 (4.5K ratings)](https://appshunter.io/ios/app/calculator-plus/id1597933199/reviews)** |
| Number of ratings | 2.5K | **4.5K** |
| Positive reviews | **61.1% of reviews** | 45.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 97 MB | 55 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing four time ledo Technology Co., Ltd.](https://appshunter.io/developer/1485888098) | [Rocket Apps GmbH](https://appshunter.io/developer/1566586717) |

## What reviewers say

### calculator HD⁻

[App page](https://appshunter.io/ios/app/calculator-hd/id1485888099)

A powerful and intuitive calculator app designed for simplicity and beauty. It offers a complete record of operations that can be reviewed and edited, along with scientific functions and multiple themes. Enjoy enhanced functionality with an optional subscription.

**Highlights:** Records operation process, Check and edit operations, Elegant and intuitive interface, Displays equation and result simultaneously, Supports scientific functions, Multiple themes

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| auto season vip | $2.99 | per 3 months |
| 连续年会员 | $3.99 | per year |
| 深色主题 | $0.99 | one-time |
| 周会员 | $0.99 | one-time |
| 高级会员 | $14.99 | one-time |
| 超级会员 | $14.99 | one-time |

**What reviewers like**

- 👍 Good calculator
- 🚀 Efficient calculations

**What reviewers complain about**

- 💰 Paid features
- 🔒 Locked to one device
- 🐛 Calculation errors
- 🙅‍♀️ Lack of functionality

**Reported bugs**

- Incorrect calculation results
- Compatibility issues with new devices

**Requested features**

- More customization options
- Improved user interface
- Free version without ads


### Calculator +ㅤ

[App page](https://appshunter.io/ios/app/calculator-plus/id1597933199)

This app simplifies math with basic, scientific, and fraction calculations. It also features a unique snap-and-scribble function to solve problems from photos. Customize your experience with themes and access a calculation history.

**Highlights:** Snap and Scribble Calculator, Basic Calculator, Scientific Calculator, Fraction Calculator, Currency Converter, Calculation History, Customizable Themes

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Apps PRO Weekly | $2.99 | per 7 days |
| Rocket Apps PRO Monthly | $4.99 | per month |
| Rocket Apps PRO Yearly | $9.99 | per year |
| Rocket Apps PRO Offer | $19.99 | per year |
| Rocket Apps PRO Yearly | $19.99 | per year |
| Rocket Apps PRO Yearly | $29.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate calculations
- 🎨 Excellent visuals
- 💡 Helpful for academic work

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🔍 Decimal entry quirks
- 📺 Too many ads
- 🔒 Locked features behind paywall

**Reported bugs**

- Inaccurate square root calculations
- Compatibility issues on iPad
- Decimal point not recognized

**Requested features**

- Negative number support
- Improved fraction calculator
- Scientific calculator layout
- Option to disable history feature


## Frequently asked questions

### Is calculator HD⁻ free?

calculator HD⁻ is free to download, with in-app purchases available.

### Is Calculator +ㅤ free?

Calculator +ㅤ is free to download, with in-app purchases available.

### Which has better reviews, calculator HD⁻ or Calculator +ㅤ?

Calculator +ㅤ is rated higher. calculator HD⁻ averages 4.5 out of 5 from 2.5K ratings, while Calculator +ㅤ averages 4.6 from 4.5K ratings.

### Do calculator HD⁻ or Calculator +ㅤ have ads?

Both calculator HD⁻ and Calculator +ㅤ show ads.

### Which is updated more often, calculator HD⁻ or Calculator +ㅤ?

calculator HD⁻ ships an update every 6 weeks, and Calculator +ㅤ fortnightly. Most recently, calculator HD⁻ was updated on September 23, 2026 and Calculator +ㅤ on September 23, 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.*