# 交小星 vs 大夏书系

The clearest difference is update cadence: 大夏书系 at monthly against 交小星's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 交小星 sells 8 one-off in-app purchases and 大夏书系 sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

交小星 ships an update every 3 months, 大夏书系 monthly. The most recent releases landed on September 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 交小星 | 大夏书系 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 86 MB | 193 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [上海交通大学出版社有限公司](https://appshunter.io/developer/667356292) | [ECNU Press](https://appshunter.io/developer/496874216) |

## What reviewers say

### 交小星

[App page](https://appshunter.io/ios/app/id1479796969)

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6阅读币 | $0.99 | one-time |
| 12阅读币 | $1.99 | one-time |
| 18阅读币 | $2.99 | one-time |
| 25阅读币 | $3.99 | one-time |
| 50阅读币 | $6.99 | one-time |
| 108阅读币 | $14.99 | one-time |
| 198阅读币 | $29.99 | one-time |
| 588阅读币 | $79.99 | one-time |


### 大夏书系

[App page](https://appshunter.io/ios/app/id6460689596)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 12教育币 | $1.99 | one-time |
| 月卡 | $2.99 | one-time |
| 30教育币 | $3.99 | one-time |
| 季卡 | $6.99 | one-time |
| 50教育币 | $6.99 | one-time |
| 年卡 | $14.99 | one-time |
| 98教育币 | $14.99 | one-time |


## Frequently asked questions

### Is 交小星 free?

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

### Is 大夏书系 free?

大夏书系 is free to download, with in-app purchases available.

### Do 交小星 or 大夏书系 have ads?

Neither 交小星 nor 大夏书系 shows ads.

### Which is updated more often, 交小星 or 大夏书系?

交小星 ships an update every 3 months, and 大夏书系 monthly. Most recently, 交小星 was updated on September 21, 2026 and 大夏书系 on October 3, 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.*