# 無限國語練習簿 vs Ducklis

The clearest difference is ads: Ducklis at none against 無限國語練習簿's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 無限國語練習簿 sells 2 in-app purchases, starting at $1.99 per month and Ducklis sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

無限國語練習簿 ships an update every 3 weeks, Ducklis every 2 weeks. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 無限國語練習簿 | Ducklis |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 11 MB |
| Requires iOS | 18.5 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yumi Mochizuki](https://appshunter.io/developer/1859858468) | [云涛 贾](https://appshunter.io/developer/1887721892) |

## What reviewers say

### 無限國語練習簿

[App page](https://appshunter.io/ios/app/ai/id6759946392)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium（月繳） | $1.99 | per month |
| 無限生成＋移除廣告（永久） | $8.99 | one-time |


### Ducklis

[App page](https://appshunter.io/ios/app/ducklis/id6781343299)

This app helps children practice dictation and vocabulary review independently. Parents and teachers can easily create word lists by scanning, typing, or pasting text. It offers customizable practice sessions and focused review of difficult words.

**Highlights:** Scan textbooks for word lists, Create lists by typing or pasting text, Customizable practice pace and playback, Focused review of misspelled words, Share word lists via image or QR code, Premium Voice for Chinese dictation

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is 無限國語練習簿 free?

無限國語練習簿 is free to download, with in-app purchases available.

### Is Ducklis free?

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

### Do 無限國語練習簿 or Ducklis have ads?

無限國語練習簿 shows ads; Ducklis does not.

### Which is updated more often, 無限國語練習簿 or Ducklis?

無限國語練習簿 ships an update every 3 weeks, and Ducklis every 2 weeks. Most recently, 無限國語練習簿 was updated on October 8, 2026 and Ducklis on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*