# DuoNiu Write vs 成语书院

The clearest difference is iOS requirement: 成语书院 at 13.0 against DuoNiu Write's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. DuoNiu Write sells 2 one-off in-app purchases and 成语书院 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DuoNiu Write | 成语书院 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 131 MB | 148 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [娟妹 曹](https://appshunter.io/developer/6780705701) | [上海深维探索科技有限公司](https://appshunter.io/developer/1833427594) |

## What reviewers say

### DuoNiu Write

[App page](https://appshunter.io/ios/app/duoniu-write/id6780910815)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Poem Practice | $0.99 | one-time |
| Unlock All Poetry | $0.99 | one-time |


### 成语书院

[App page](https://appshunter.io/ios/app/id6800374905)

This app uses a water-ink style to make learning Chinese idioms engaging through games like idiom solitaire and AI battles. It offers structured learning with diverse question types, intelligent review, and personalized customization options. Enjoy a free experience with optional VIP access for permanent unlocks.

**Highlights:** Idiom solitaire gameplay, AI text-based battles, Chapter-based progression maps, Crossword-style idiom puzzles, Comprehensive idiom dictionary, Progress tracking and smart review, Multiple question types, Customizable skins and AI difficulty

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁所有功能 | $0.99 | one-time |


## Frequently asked questions

### Is DuoNiu Write free?

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

### Is 成语书院 free?

成语书院 is free to download, with in-app purchases available.

### Do DuoNiu Write or 成语书院 have ads?

Neither DuoNiu Write nor 成语书院 shows ads.

### Which is updated more often, DuoNiu Write or 成语书院?

DuoNiu Write ships an update weekly, and 成语书院 weekly. Most recently, DuoNiu Write was updated on October 13, 2026 and 成语书院 on October 24, 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.*