# 單字庫：最有效的背單字遊戲 vs 空中美語APP+

The clearest difference is update cadence: 空中美語APP+ at every 2 weeks against 單字庫：最有效的背單字遊戲's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 單字庫：最有效的背單字遊戲 sells 3 in-app purchases, starting at $9.99 per month and 空中美語APP+ sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

單字庫：最有效的背單字遊戲 ships an update every 2 months, 空中美語APP+ every 2 weeks. The most recent releases landed on September 24, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 單字庫：最有效的背單字遊戲 | 空中美語APP+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (833 ratings)](https://appshunter.io/ios/app/id6444397780/reviews)** | — |
| Number of ratings | **833** | — |
| Positive reviews | 96.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 529 MB | 59 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [英文庫](https://appshunter.io/developer/1654452547) | [空中美語](https://appshunter.io/developer/1373172419) |

## What reviewers say

### 單字庫：最有效的背單字遊戲

[App page](https://appshunter.io/ios/app/id6444397780)

Unlock the fun in vocabulary learning with our innovative game app! Seamlessly memorize 10,000 words through engaging activities like fruit planting and turtle nurturing. Personalized review journeys ensure long-term retention while tracking your progress efficiently. Start the coolest vocabulary adventure now, suitable for all ages! [Privacy Policy](https://english.cool/app-privacy-policy/) | [Terms of Use](https:/www.apple.com/legal/internet-services/itunes/dev/stdeula/)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP-月訂閱 | $9.99 | per month |
| VIP-年訂閱 | $69.99 | per year |
| VIP-年訂閱 | $69.99 | per year |


### 空中美語APP+

[App page](https://appshunter.io/ios/app/app-plus/id6753041631)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 超值方案 | $2.99 | per month |
| AI方案 | $5.99 | per month |


## Frequently asked questions

### Is 單字庫：最有效的背單字遊戲 free?

單字庫：最有效的背單字遊戲 is free to download, with in-app purchases available.

### Is 空中美語APP+ free?

空中美語APP+ is free to download, with in-app purchases available.

### Do 單字庫：最有效的背單字遊戲 or 空中美語APP+ have ads?

Neither 單字庫：最有效的背單字遊戲 nor 空中美語APP+ shows ads.

### Which is updated more often, 單字庫：最有效的背單字遊戲 or 空中美語APP+?

單字庫：最有效的背單字遊戲 ships an update every 2 months, and 空中美語APP+ every 2 weeks. Most recently, 單字庫：最有效的背單字遊戲 was updated on September 24, 2026 and 空中美語APP+ on September 15, 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.*