# 完形词汇 vs RepeatDuck

The clearest difference is ads: RepeatDuck at none against 完形词汇's shown. 完形词汇's advantage is update cadence (weekly vs every 2 months) and iOS requirement (12.0 vs 15.0). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. 完形词汇 sells 4 one-off in-app purchases and RepeatDuck sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for 完形词汇 against 5.0 for RepeatDuck. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

完形词汇 ships an update weekly, RepeatDuck every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 完形词汇 | RepeatDuck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/id1672818218/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/repeatduck-chinese-master/id6740007643/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 74 MB | 147 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Chengdu Yztp Technology Co., Ltd](https://appshunter.io/developer/1437368208) | [Chaojifeng (Xiamen) Network Technology Co., Ltd.](https://appshunter.io/developer/1779974143) |

## What reviewers say

### 完形词汇

[App page](https://appshunter.io/ios/app/id1672818218)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完形词汇Pr | $0.99 | one-time |
| 50积分 | $0.99 | one-time |
| 120积分 | $1.99 | one-time |
| 500积分 | $3.99 | one-time |


### RepeatDuck

[App page](https://appshunter.io/ios/app/repeatduck-chinese-master/id6740007643)

Master Chinese vocabulary with intelligent flashcards and spaced repetition. Features audio-based memorization, custom card creation, and detailed progress analytics. Learn efficiently with offline access and customizable reading modes.

**Highlights:** Audio-based memorization, Custom flashcard creation, Spaced repetition system, Progress tracking and analytics, Offline mode, Configurable learning languages

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $1.99 | per month |
| Yearly Pro | $9.99 | per year |
| Lifetime Pro | $19.99 | one-time |


## Frequently asked questions

### Is 完形词汇 free?

完形词汇 is free to download, with in-app purchases available.

### Is RepeatDuck free?

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

### Which has better reviews, 完形词汇 or RepeatDuck?

完形词汇 and RepeatDuck are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 完形词汇 or RepeatDuck have ads?

完形词汇 shows ads; RepeatDuck does not.

### Which is updated more often, 完形词汇 or RepeatDuck?

完形词汇 ships an update weekly, and RepeatDuck every 2 months. Most recently, 完形词汇 was updated on November 3, 2026 and RepeatDuck on October 30, 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.*