# 记密码 vs Athena Reader

The clearest difference is update cadence: Athena Reader at every 4 days against 记密码's every 3 weeks. 记密码's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 记密码 sells 1 one-off in-app purchase and Athena Reader sells 9 in-app purchases, starting at $10.99 per month. Whichever you choose, the download price is not the number that matters.

记密码 ships an update every 3 weeks, Athena Reader every 4 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 记密码 | Athena Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 30 MB | 111 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [青山 郭](https://appshunter.io/developer/1800987338) | [祥 刘](https://appshunter.io/developer/6802489561) |

## What reviewers say

### 记密码

[App page](https://appshunter.io/ios/app/id6744935782)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 早鸟会员 | $4.99 | one-time |


### Athena Reader

[App page](https://appshunter.io/ios/app/athena-reader-ai-notebook/id6802726804)

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Athena Pro Monthly | $10.99 | per month |
| Athena Pro Quarterly | $27.99 | per 3 months |
| Athena Pro Yearly | $79.99 | per year |
| 200 AI Chats | $5.99 | one-time |
| +10GB (about 3,000 books) | $5.99 | one-time |
| OCR 10 Books | $6.99 | one-time |
| 500 AI Chats | $11.99 | one-time |
| OCR 30 Books | $16.99 | one-time |
| 1200 AI Chats | $23.99 | one-time |


## Frequently asked questions

### Is 记密码 free?

记密码 is free to download, with in-app purchases available.

### Is Athena Reader free?

Athena Reader is free to download, with in-app purchases available.

### Do 记密码 or Athena Reader have ads?

Neither 记密码 nor Athena Reader shows ads.

### Which is updated more often, 记密码 or Athena Reader?

记密码 ships an update every 3 weeks, and Athena Reader every 4 days. Most recently, 记密码 was updated on November 5, 2026 and Athena Reader on October 31, 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.*