# Light Diary vs 测了个测

The clearest difference is update cadence: 测了个测 at every 10 days against Light Diary's every 3 weeks. Light Diary's advantage is iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Light Diary ships an update every 3 weeks, 测了个测 every 10 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Light Diary | 测了个测 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 29 MB | 129 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [海涛 张](https://appshunter.io/developer/1894749044) | [Shanghai Liangjiang Yidi Digital Technology Co., Ltd.](https://appshunter.io/developer/1894969866) |

## What reviewers say

### Light Diary

[App page](https://appshunter.io/ios/app/light-diary-daily-journal/id6767800450)

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

**In-app purchases:** none


### 测了个测

[App page](https://appshunter.io/ios/app/mbti/id6784694663)

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

**In-app purchases:** none


## Frequently asked questions

### Is Light Diary free?

Light Diary is free to download, with no in-app purchases.

### Is 测了个测 free?

测了个测 is free to download, with no in-app purchases.

### Do Light Diary or 测了个测 have ads?

Neither Light Diary nor 测了个测 shows ads.

### Which is updated more often, Light Diary or 测了个测?

Light Diary ships an update every 3 weeks, and 测了个测 every 10 days. Most recently, Light Diary was updated on October 25, 2026 and 测了个测 on November 5, 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.*