# 工程几何计算器 vs 乐播投屏

The clearest difference is review sentiment: 工程几何计算器 at 83% against 乐播投屏's 18%. 工程几何计算器 also leads on rating (4.4 vs 3.9) and ads (none vs shown). 乐播投屏's advantage is ratings volume (382 vs 9). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 工程几何计算器 sells 1 one-off in-app purchase and 乐播投屏 sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

工程几何计算器 holds the better App Store score, 4.4 against 3.9. That said, the two scores are not equally well evidenced: 乐播投屏 has 382 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 83% of 工程几何计算器's written reviews are positive against 18% of 乐播投屏's.

## The numbers

| Metric | 工程几何计算器 | 乐播投屏 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/id1054766479/reviews)** | [3.9 (382 ratings)](https://appshunter.io/ios/app/ai/id1116038378/reviews) |
| Number of ratings | 9 | **382** |
| Positive reviews | **82.6% of reviews** | 17.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 275 MB |
| Requires iOS | **6.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [境 饶](https://appshunter.io/developer/935275144) | [深圳乐播科技有限公司](https://appshunter.io/developer/1116038377) |

## What reviewers say

### 工程几何计算器

[App page](https://appshunter.io/ios/app/id1054766479)

This utility app calculates geometric areas for polygons and solves for missing sides and angles in triangles. It also includes unit conversion between millimeters, centimeters, meters, and kilometers, with a dedicated numeric keypad for efficient input.

**Highlights:** Polygon area calculation, Triangle side and angle solver, Unit conversion (mm, cm, m, km), Dedicated numeric keypad, Simple and practical interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去除广告 | $0.99 | one-time |


### 乐播投屏

[App page](https://appshunter.io/ios/app/ai/id1116038378)

Effortlessly cast your phone, computer, or tablet screen to your TV or projector using AI voice commands. Enjoy seamless sharing for work, education, entertainment, and gaming with high-quality, low-latency streaming.

**Highlights:** AI voice control for casting, Multi-device screen sharing, Remote collaboration features, High-definition streaming (up to 4K), Low-latency gaming and media, Cross-platform compatibility

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 乐播基础VIP连续包月 | $1.99 | per month |
| SVIP会员连续包月 | $2.99 | per month |
| 个人SVIP会员-连续包月 | $3.99 | per month |
| SVIP会员连续包月 | $3.99 | per month |
| SVIP会员日卡 | $0.99 | one-time |
| 乐播投屏1个月基础会员特惠 | $1.99 | one-time |
| 个人SVIP_14天卡 | $2.99 | one-time |
| SVIP会员月卡 | $5.99 | one-time |
| 个人SVIP年卡 | $12.99 | one-time |
| 个人SVIP会员3年卡 | $24.99 | one-time |

**What reviewers like**

- 🚀 Smooth and stable performance
- 👍 Convenient screen mirroring
- 💡 Useful for presentations and media sharing

**What reviewers complain about**

- 🔒 Excessive privacy data collection
- 🐛 Frequent crashes and bugs
- 🔋 High battery consumption
- 👎 Confusing and frustrating user experience
- 💸 Overpriced with unnecessary paid features

**Reported bugs**

- Login and registration issues
- Inconsistent screen mirroring performance
- Compatibility problems with newer OS versions

**Requested features**

- Support for non-Chinese phone numbers
- Improved compatibility with international devices
- More language options beyond Chinese


## Frequently asked questions

### Is 工程几何计算器 free?

工程几何计算器 is free to download, with in-app purchases available.

### Is 乐播投屏 free?

乐播投屏 is free to download, with in-app purchases available.

### Which has better reviews, 工程几何计算器 or 乐播投屏?

工程几何计算器 is rated higher. 工程几何计算器 averages 4.4 out of 5 from 9 ratings, while 乐播投屏 averages 3.9 from 382 ratings.

### Do 工程几何计算器 or 乐播投屏 have ads?

乐播投屏 shows ads; 工程几何计算器 does not.

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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.*