# 头痛日记 vs AI老花镜

The clearest difference is price: 头痛日记 at Free against AI老花镜's $0.99. 头痛日记 also leads on iOS requirement (12.0 vs 14.0). AI老花镜's advantage is in-app purchases (none vs 3) and update cadence (weekly vs every 4 months). On ads and device support there is nothing between them.

头痛日记 is free to download; AI老花镜 costs $0.99 up front. 头痛日记 sells 3 one-off in-app purchases. AI老花镜 asks for nothing beyond the download.

头痛日记 ships an update every 4 months, AI老花镜 weekly. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 头痛日记 | AI老花镜 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id1551096072/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 22 MB | 4 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Qian Kun zhu](https://appshunter.io/developer/967535010) | [岚 孟](https://appshunter.io/developer/1639358007) |

## What reviewers say

### 头痛日记

[App page](https://appshunter.io/ios/app/id1551096072)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 请开发者一杯咖啡 | $0.99 | one-time |
| 给开发者加个鸡腿 | $1.99 | one-time |
| 送开发者瓶生发水 | $4.99 | one-time |


### AI老花镜

[App page](https://appshunter.io/ios/app/ai/id6541753289)

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

**In-app purchases:** none


## Frequently asked questions

### Is 头痛日记 free?

头痛日记 is free to download, with in-app purchases available.

### Is AI老花镜 free?

AI老花镜 costs $0.99, with no in-app purchases.

### Do 头痛日记 or AI老花镜 have ads?

Neither 头痛日记 nor AI老花镜 shows ads.

### Which is updated more often, 头痛日记 or AI老花镜?

头痛日记 ships an update every 4 months, and AI老花镜 weekly. Most recently, 头痛日记 was updated on October 24, 2026 and AI老花镜 on October 22, 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.*