# 快乐背背词 vs 我的单词本Ai

The clearest difference is in-app purchases: 我的单词本Ai at none against 快乐背背词's 2. 我的单词本Ai also leads on iOS requirement (13.0 vs 16.6). On price there is nothing between them.

Both are free to download. 快乐背背词 sells 2 one-off in-app purchases. 我的单词本Ai asks for nothing beyond the download.

## The numbers

| Metric | 快乐背背词 | 我的单词本Ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Size | 34 MB | 61 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [剑龙 刘](https://appshunter.io/developer/562718731) | [Beijing Exchange Unite Technology Co., Ltd.](https://appshunter.io/developer/1175308869) |

## What reviewers say

### 快乐背背词

[App page](https://appshunter.io/ios/app/id1544582453)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 订阅1个月 | $0.99 | one-time |
| 订阅1年 | $9.99 | one-time |


### 我的单词本Ai

[App page](https://appshunter.io/ios/app/ai/id1618585534)

**In-app purchases:** none


## Frequently asked questions

### Is 快乐背背词 free?

快乐背背词 is free to download, with in-app purchases available.

### Is 我的单词本Ai free?

我的单词本Ai is free to download, with no in-app purchases.

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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.*