# 单词鸭 vs AI二供

The clearest difference is in-app purchases: AI二供 at none against 单词鸭's 10. AI二供 also leads on ads (none vs shown) and update cadence (weekly vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. 单词鸭 sells 10 in-app purchases, starting at $29.99 per year. AI二供 asks for nothing beyond the download.

单词鸭 ships an update every 2 weeks, AI二供 weekly. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 单词鸭 | AI二供 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (29 ratings)](https://appshunter.io/ios/app/and-and/id6462759069/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 68.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 228 MB | 58 MB |
| Requires iOS | 14 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JingKui](https://appshunter.io/developer/1676729802) | [奇力士(武汉)智慧水务科技有限公司](https://appshunter.io/developer/1539593665) |

## What reviewers say

### 单词鸭

[App page](https://appshunter.io/ios/app/and-and/id6462759069)

Learn vocabulary through engaging mini-games like match-3 and Sudoku. Capture objects with your camera to create custom flashcards and build your own word lists. Supports various learning methods and levels, from elementary to professional exams.

**Highlights:** Vocabulary match-3 game, Word Sudoku puzzles, Object recognition for flashcards, Customizable word lists, Spaced repetition learning, Root word memorization, Online vocabulary PK battles

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 单词鸭VIP连续包年 | $29.99 | per year |
| 8金币 | $0.99 | one-time |
| 80金币 | $11.99 | one-time |
| 280金币 | $39.99 | one-time |
| 单词鸭2年VIP | $39.99 | one-time |
| 单词鸭3年VIP | $59.99 | one-time |
| 568金币 | $79.99 | one-time |
| 888金币 | $129.99 | one-time |
| 968金币 | $129.99 | one-time |
| 1月超大型班级VIP | $599.99 | one-time |


### AI二供

[App page](https://appshunter.io/ios/app/ai/id6751525910)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 单词鸭 free?

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

### Is AI二供 free?

AI二供 is free to download, with no in-app purchases.

### Do 单词鸭 or AI二供 have ads?

单词鸭 shows ads; AI二供 does not.

### Which is updated more often, 单词鸭 or AI二供?

单词鸭 ships an update every 2 weeks, and AI二供 weekly. Most recently, 单词鸭 was updated on November 7, 2026 and AI二供 on October 28, 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.*