# Light Teller vs 差旅壹号喜鹊

The clearest difference is in-app purchases: 差旅壹号喜鹊 at none against Light Teller's 2. 差旅壹号喜鹊 also leads on update cadence (weekly vs every 5 months) and iOS requirement (13.0 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. 差旅壹号喜鹊 asks for nothing beyond the download.

Light Teller ships an update every 5 months, 差旅壹号喜鹊 weekly. The most recent releases landed on September 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Light Teller | 差旅壹号喜鹊 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/light-teller/id6450953060/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 29 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [佳佳 陶](https://appshunter.io/developer/1682189695) | [Sichuan 517Na Science And Technology Co.,Ltd.](https://appshunter.io/developer/893570332) |

## What reviewers say

### 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 |


### 差旅壹号喜鹊

[App page](https://appshunter.io/ios/app/id6758380584)

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

**In-app purchases:** none


## Frequently asked questions

### Is Light Teller free?

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

### Is 差旅壹号喜鹊 free?

差旅壹号喜鹊 is free to download, with no in-app purchases.

### Do Light Teller or 差旅壹号喜鹊 have ads?

Neither Light Teller nor 差旅壹号喜鹊 shows ads.

### Which is updated more often, Light Teller or 差旅壹号喜鹊?

Light Teller ships an update every 5 months, and 差旅壹号喜鹊 weekly. Most recently, Light Teller was updated on September 20, 2026 and 差旅壹号喜鹊 on October 25, 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.*