# 清潔好幫手 vs Light Teller

The clearest difference is in-app purchases: 清潔好幫手 at none against Light Teller's 2. 清潔好幫手 also leads on update cadence (every 5 weeks vs every 5 months) and iOS requirement (14.0 vs 16.1). On price, ads and device support there is nothing between them.

Both are free to download. Light Teller sells 2 one-off in-app purchases. 清潔好幫手 asks for nothing beyond the download.

清潔好幫手 ships an update every 5 weeks, Light Teller every 5 months. The most recent releases landed on October 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 清潔好幫手 | Light Teller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/light-teller/id6450953060/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 1 MB |
| Requires iOS | **14.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YI JIE ENVIRONMENTAL PROTECTION CO., LTD.](https://appshunter.io/developer/1462362732) | [佳佳 陶](https://appshunter.io/developer/1682189695) |

## What reviewers say

### 清潔好幫手

[App page](https://appshunter.io/ios/app/id1462362733)

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

**In-app purchases:** none


### Light Teller

[App page](https://appshunter.io/ios/app/light-teller/id6450953060)

This app uses your smartphone camera to measure ambient light levels, helping parents ensure their children's study spaces have adequate lighting to protect their vision and reduce myopia risk. It offers clear instructions and educational content on light's impact on eye health.

**Highlights:** Brightness testing with smartphone camera, Light health guidance for parents, Detailed user instructions, Accurate and reliable measurements, Educational articles on visual health

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Months Access | $1.99 | one-time |
| 1 Year Access | $4.99 | one-time |


## Frequently asked questions

### Is 清潔好幫手 free?

清潔好幫手 is free to download, with no in-app purchases.

### Is Light Teller free?

Light Teller is free to download, with in-app purchases available.

### Do 清潔好幫手 or Light Teller have ads?

Neither 清潔好幫手 nor Light Teller shows ads.

### Which is updated more often, 清潔好幫手 or Light Teller?

清潔好幫手 ships an update every 5 weeks, and Light Teller every 5 months. Most recently, 清潔好幫手 was updated on October 9, 2026 and Light Teller on September 20, 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.*