# 聆知 vs 亿童图书

The clearest difference is in-app purchases: 亿童图书 at none against 聆知's 11. 亿童图书 also leads on iOS requirement (11.0 vs 13.0). 聆知's advantage is update cadence (every 6 days vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 聆知 sells 11 one-off in-app purchases. 亿童图书 asks for nothing beyond the download.

聆知 ships an update every 6 days, 亿童图书 every 5 weeks. The most recent releases landed on October 29, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 聆知 | 亿童图书 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 5 weeks |
| Size | 72 MB | 80 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [嘿球(北京)网络科技有限公司](https://appshunter.io/developer/1205393651) | [武汉亿童文教股份有限公司](https://appshunter.io/developer/977882876) |

## What reviewers say

### 聆知

[App page](https://appshunter.io/ios/app/id1457931045)

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6知币 | $0.99 | one-time |
| 18知币 | $2.99 | one-time |
| 50知币 | $6.99 | one-time |
| 118知币 | $17.99 | one-time |
| 218知币 | $29.99 | one-time |
| 388知币 | $59.99 | one-time |
| 1年期会员 | $59.99 | one-time |
| 聆知女神卡(一年) | $59.99 | one-time |
| 518知币 | $69.99 | one-time |
| 618知币 | $89.99 | one-time |
| 聆知知识代言人 | $149.99 | one-time |


### 亿童图书

[App page](https://appshunter.io/ios/app/id6449167695)

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

**In-app purchases:** none


## Frequently asked questions

### Is 聆知 free?

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

### Is 亿童图书 free?

亿童图书 is free to download, with no in-app purchases.

### Do 聆知 or 亿童图书 have ads?

Neither 聆知 nor 亿童图书 shows ads.

### Which is updated more often, 聆知 or 亿童图书?

聆知 ships an update every 6 days, and 亿童图书 every 5 weeks. Most recently, 聆知 was updated on October 29, 2026 and 亿童图书 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.*