# Book Context vs 边注

The clearest difference is device support: 边注 at 3 against Book Context's 1. 边注 also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Book Context sells 2 in-app purchases, starting at $0.99 per month and 边注 sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Book Context ships an update every 3 weeks, 边注 monthly. Both last shipped on November 5, 2026.

## The numbers

| Metric | Book Context | 边注 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 5 MB | 345 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [双仕 韩](https://appshunter.io/developer/1885479901) | [烜 张](https://appshunter.io/developer/1873916074) |

## What reviewers say

### Book Context

[App page](https://appshunter.io/ios/app/book-context-smart-library/id6761686112)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $7.99 | per year |


### 边注

[App page](https://appshunter.io/ios/app/id6764737944)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月订阅 | $2.99 | per month |
| 年订阅 | $14.99 | per year |


## Frequently asked questions

### Is Book Context free?

Book Context is free to download, with in-app purchases available.

### Is 边注 free?

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

### Do Book Context or 边注 have ads?

Neither Book Context nor 边注 shows ads.

### Which is updated more often, Book Context or 边注?

Book Context ships an update every 3 weeks, and 边注 monthly. Most recently, Book Context was updated on November 5, 2026 and 边注 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.*