# 尺子水平仪－长度、体积、压力、温度、重量换算器 vs calculator HD⁻

尺子水平仪－长度、体积、压力、温度、重量换算器 and calculator HD⁻ both sit at 4.6 stars, but that hides the real split: 61% of calculator HD⁻'s written reviews are positive against 0% of 尺子水平仪－长度、体积、压力、温度、重量换算器's. calculator HD⁻ also leads on update cadence (every 3 months vs every 18 months) and ratings volume (2.5K vs 21). 尺子水平仪－长度、体积、压力、温度、重量换算器's advantage is ads (none vs shown) and iOS requirement (6.0 vs 15.0). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. 尺子水平仪－长度、体积、压力、温度、重量换算器 sells 1 one-off in-app purchase 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 尺子水平仪－长度、体积、压力、温度、重量换算器 against 4.5 for calculator HD⁻. That said, the two scores are not equally well evidenced: calculator HD⁻ has 2.5K ratings behind it against 21, so its average is the more settled of the two. Written reviews are what separate them: 0% of 尺子水平仪－长度、体积、压力、温度、重量换算器's written reviews are positive against 61% of calculator HD⁻'s.

尺子水平仪－长度、体积、压力、温度、重量换算器 ships an update every 18 months, calculator HD⁻ every 3 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 尺子水平仪－长度、体积、压力、温度、重量换算器 | calculator HD⁻ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (21 ratings)](https://appshunter.io/ios/app/id1126067978/reviews)** | [4.5 (2.5K ratings)](https://appshunter.io/ios/app/calculator-hd/id1485888099/reviews) |
| Number of ratings | 21 | **2.5K** |
| Positive reviews | 0.0% of reviews | **61.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 22 MB | 98 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [芬霞 方](https://appshunter.io/developer/1083875516) | [Beijing four time ledo Technology Co., Ltd.](https://appshunter.io/developer/1485888098) |

## What reviewers say

### 尺子水平仪－长度、体积、压力、温度、重量换算器

[App page](https://appshunter.io/ios/app/id1126067978)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### 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 尺子水平仪－长度、体积、压力、温度、重量换算器 free?

尺子水平仪－长度、体积、压力、温度、重量换算器 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, 尺子水平仪－长度、体积、压力、温度、重量换算器 or calculator HD⁻?

尺子水平仪－长度、体积、压力、温度、重量换算器 is rated higher. 尺子水平仪－长度、体积、压力、温度、重量换算器 averages 4.6 out of 5 from 21 ratings, while calculator HD⁻ averages 4.5 from 2.5K ratings.

### Do 尺子水平仪－长度、体积、压力、温度、重量换算器 or calculator HD⁻ have ads?

calculator HD⁻ shows ads; 尺子水平仪－长度、体积、压力、温度、重量换算器 does not.

### Which is updated more often, 尺子水平仪－长度、体积、压力、温度、重量换算器 or calculator HD⁻?

尺子水平仪－长度、体积、压力、温度、重量换算器 ships an update every 18 months, and calculator HD⁻ every 3 months. Most recently, 尺子水平仪－长度、体积、压力、温度、重量换算器 was updated on November 2, 2026 and calculator HD⁻ on November 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*