# Calculator # vs calculator HD⁻

The clearest difference is ratings volume: Calculator # at 36K against calculator HD⁻'s 2.5K. On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Calculator # sells 6 in-app purchases, starting at $1.49 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.

On the App Store both sit at effectively the same score — 4.6 for Calculator # against 4.5 for calculator HD⁻. That said, the two scores are not equally well evidenced: Calculator # has 36K ratings behind it against 2.5K, so its average is the more settled of the two. Written reviews are what separate them: 60% of Calculator #'s written reviews are positive against 61% of calculator HD⁻'s.

Calculator # ships an update every 2 months, calculator HD⁻ every 6 weeks. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Calculator # | calculator HD⁻ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (36K ratings)](https://appshunter.io/ios/app/calculator/id458535080/reviews)** | [4.5 (2.5K ratings)](https://appshunter.io/ios/app/calculator-hd/id1485888099/reviews) |
| Number of ratings | **36K** | 2.5K |
| Positive reviews | 60.0% of reviews | **61.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 57 MB | 97 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Incpt.Mobis](https://appshunter.io/developer/445261166) | [Beijing four time ledo Technology Co., Ltd.](https://appshunter.io/developer/1485888098) |

## What reviewers say

### Calculator #

[App page](https://appshunter.io/ios/app/calculator/id458535080)

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

**Highlights:** Math Photos Solver, Handwriting Recognition, AI Math Problem Solver, Mathematical Display, Equation Solvers, 2D Graphing, Algebraic Functions

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Upgrade 1 Month | $1.49 | per month |
| PRO Upgrade 3 Months | $2.99 | per 3 months |
| PRO + Recognition 1 Month | $4.99 | per month |
| PRO + Recognition 3 Months | $11.99 | per 3 months |
| 250 AI Recognition & Queries | $0.99 | one-time |
| 600 AI Recognition & Queries | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Powerful functionality
- 💡 Helpful for math classes
- ⭐ Great for students
- 👌 Works like a real calculator

**What reviewers complain about**

- 🔍 Confusing interface after update
- 📢 Too many intrusive ads
- 💰 Paywall for advanced features
- 🐛 Incorrect calculations
- 🔇 Loud audio ads

**Reported bugs**

- Crashes when trying to use certain functions
- Handwriting recognition not working reliably
- Inability to input negative numbers

**Requested features**

- Add option to turn off animation
- Improve ad placement to avoid obstructing usage
- Provide more transparency on paid features


### 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 4.6 out of 5 from 36K 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 2 months, and calculator HD⁻ every 6 weeks. Most recently, Calculator # was updated on September 25, 2026 and calculator HD⁻ 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.*