# iBuoy vs 單字庫：最有效的背單字遊戲

The clearest difference is in-app purchases: iBuoy at none against 單字庫：最有效的背單字遊戲's 3. 單字庫：最有效的背單字遊戲's advantage is update cadence (every 2 months vs every 4 months). On price, ads, device support and iOS requirement 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. iBuoy asks for nothing beyond the download.

iBuoy ships an update every 4 months, 單字庫：最有效的背單字遊戲 every 2 months. The most recent releases landed on October 17, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | iBuoy | 單字庫：最有效的背單字遊戲 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (834 ratings)](https://appshunter.io/ios/app/id6444397780/reviews)** |
| Number of ratings | — | **834** |
| Positive reviews | — | 96.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 18 MB | 529 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MEI-HUI LEE](https://appshunter.io/developer/1336884839) | [英文庫](https://appshunter.io/developer/1654452547) |

## What reviewers say

### iBuoy

[App page](https://appshunter.io/ios/app/ibuoy/id1336884840)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is iBuoy free?

iBuoy is free to download, with no in-app purchases.

### 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.

### Do iBuoy or 單字庫：最有效的背單字遊戲 have ads?

Neither iBuoy nor 單字庫：最有效的背單字遊戲 shows ads.

### Which is updated more often, iBuoy or 單字庫：最有效的背單字遊戲?

iBuoy ships an update every 4 months, and 單字庫：最有效的背單字遊戲 every 2 months. Most recently, iBuoy was updated on October 17, 2026 and 單字庫：最有效的背單字遊戲 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.*