# Calculator₊ vs calculator HD⁻

The clearest difference is ratings volume: Calculator₊ at 1.7M against calculator HD⁻'s 2.5K. Calculator₊ also leads on update cadence (every 3 weeks vs every 3 months) and chart position (#113 vs unranked). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Calculator₊ sells 10 in-app purchases, starting at $0.99 per month and calculator HD⁻ sells 6 in-app purchases, starting at $2.99 per 3 months. Whichever you choose, the download price is not the number that matters.

Calculator₊ holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Calculator₊ has 1.7M ratings behind it against 2.5K, so its average is the more settled of the two. Written reviews point the same way: 63% of Calculator₊'s written reviews are positive against 61% of calculator HD⁻'s.

Calculator₊ ships an update every 3 weeks, calculator HD⁻ every 3 months. The most recent releases landed on November 12, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Calculator₊ | calculator HD⁻ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.7M ratings)](https://appshunter.io/ios/app/calculator/id398129933/reviews)** | [4.5 (2.5K ratings)](https://appshunter.io/ios/app/calculator-hd/id1485888099/reviews) |
| Number of ratings | **1.7M** | 2.5K |
| Positive reviews | **63.1% of reviews** | 61.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#113** | — |
| Size | 247 MB | 98 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Impala Studios](https://appshunter.io/developer/1063279743) | [Beijing four time ledo Technology Co., Ltd.](https://appshunter.io/developer/1485888098) |

## What reviewers say

### Calculator₊

[App page](https://appshunter.io/ios/app/calculator/id398129933)

**Currently charting:** #113 Top Grossing · Utilities (US App Store)

This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversions. It features an AI-powered math solver that can solve problems from photos and provides a dedicated space for math notes. Accessibility features ensure ease of use for all users.

**Highlights:** Basic and scientific calculations, Unit and currency converter, AI-powered math solver with photo recognition, Math notes with instant solutions, Calculation history log, Accessibility features (Dynamic Text Size, VoiceOver, High-Contrast Mode)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Member Special Offer | $0.99 | per month |
| Monthly Premium Member | $0.99 | per month |
| 1 Month Premium Access | $1.49 | per month |
| Half-Yearly Premium Member | $3.99 | per 6 months |
| Calculate Faster, AI, & No Ads | $4.99 | per 7 days |
| 1 Year Ad-Free | $5.99 | per year |
| Calculate Faster, AI, & No Ads | $5.99 | per 7 days |
| 1 Month Premium Trial | $5.99 | per 7 days |
| Math Solver/Full Access/No Ads | $5.99 | per 7 days |
| 6 Months Premium Access | $8.99 | per 6 months |

**What reviewers like**

- 💻 Useful calculator features
- 🎨 Customizable backgrounds and themes
- 📚 Helpful history tracking

**What reviewers complain about**

- 📺 Intrusive full-screen ads
- 💰 Expensive subscription model
- 🔍 Ads blocking calculator functionality

**Reported bugs**

- Incorrect calculation results for certain functions
- Inability to delete last entered digit without clearing entire calculation

**Requested features**

- Ability to delete individual calculation history entries
- More free advanced calculator features (fractions, currency, etc.)
- Improved ad placement that doesn't interfere with usage


### 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


## Frequently asked questions

### Is Calculator₊ free?

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

### Is calculator HD⁻ free?

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

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

Calculator₊ is rated higher. Calculator₊ averages 4.7 out of 5 from 1.7M ratings, while calculator HD⁻ averages 4.5 from 2.5K ratings.

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

Both Calculator₊ and calculator HD⁻ show ads.

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

Calculator₊ ships an update every 3 weeks, and calculator HD⁻ every 3 months. Most recently, Calculator₊ was updated on November 12, 2026 and calculator HD⁻ on November 11, 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.*