# 快乐企鹅 vs LED Assistant

The clearest difference is in-app purchases: LED Assistant at none against 快乐企鹅's 2. LED Assistant also leads on ads (none vs shown) and iOS requirement (12.1 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. 快乐企鹅 sells 2 one-off in-app purchases. LED Assistant asks for nothing beyond the download.

快乐企鹅 ships an update every 2 weeks, LED Assistant every 3 weeks. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 快乐企鹅 | LED Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 93 MB | 218 MB |
| Requires iOS | 15.0 | **12.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [时体 林](https://appshunter.io/developer/1062218647) | [北京卡莱特科技有限公司](https://appshunter.io/developer/1098528816) |

## What reviewers say

### 快乐企鹅

[App page](https://appshunter.io/ios/app/id1062218648)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6元单节课程 | $0.99 | one-time |
| 138元整套课程 | $20.99 | one-time |


### LED Assistant

[App page](https://appshunter.io/ios/app/led-assistant/id1098528817)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 快乐企鹅 free?

快乐企鹅 is free to download, with in-app purchases available.

### Is LED Assistant free?

LED Assistant is free to download, with no in-app purchases.

### Do 快乐企鹅 or LED Assistant have ads?

快乐企鹅 shows ads; LED Assistant does not.

### Which is updated more often, 快乐企鹅 or LED Assistant?

快乐企鹅 ships an update every 2 weeks, and LED Assistant every 3 weeks. Most recently, 快乐企鹅 was updated on September 15, 2026 and LED Assistant on September 17, 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.*