# 小丁同学 vs 小蜗牛智慧书

The clearest difference is in-app purchases: 小蜗牛智慧书 at none against 小丁同学's 5. 小丁同学's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. 小丁同学 sells 5 one-off in-app purchases. 小蜗牛智慧书 asks for nothing beyond the download.

## The numbers

| Metric | 小丁同学 | 小蜗牛智慧书 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Fortnightly | — |
| Size | 22 MB | 89 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Hangzhou Yida Electronic Technology Co., Ltd.](https://appshunter.io/developer/1517744915) | [Hangzhou Daxiang Tianxia Technology Co., Ltd.](https://appshunter.io/developer/1256255332) |

## What reviewers say

### 小丁同学

[App page](https://appshunter.io/ios/app/app/id1517745066)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2500学习币 | $3.99 | one-time |
| 5000学习币赠530学习币 | $6.99 | one-time |
| 10800学习币赠1200学习币 | $14.99 | one-time |
| 32800学习币赠4100学习币 | $49.99 | one-time |
| 64800学习币赠8700学习币 | $99.99 | one-time |


### 小蜗牛智慧书

[App page](https://appshunter.io/ios/app/id1535575929)

**In-app purchases:** none


## Frequently asked questions

### Is 小丁同学 free?

小丁同学 is free to download, with in-app purchases available.

### Is 小蜗牛智慧书 free?

小蜗牛智慧书 is free to download, with no in-app purchases.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*