# 绘本树 vs Adolf

The clearest difference is price: 绘本树 at Free against Adolf's $0.99. 绘本树 also leads on in-app purchases (none vs 3) and iOS requirement (10.0 vs 14.0). On update cadence, ads and device support there is nothing between them.

绘本树 is free to download; Adolf costs $0.99 up front. Adolf sells 3 one-off in-app purchases. 绘本树 asks for nothing beyond the download.

绘本树 ships an update every 3 weeks, Adolf fortnightly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 绘本树 | Adolf |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[1.5 (2 ratings)](https://appshunter.io/ios/app/adolf-word-learning/id6445839777/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Paid |
| Size | 64 MB | 12 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Storytree Education Technology Co.,Ltd](https://appshunter.io/developer/1037693017) | [金凯 朱](https://appshunter.io/developer/1662294864) |

## What reviewers say

### 绘本树

[App page](https://appshunter.io/ios/app/id1187162546)

**Features:** macOS Compatibility

**In-app purchases:** none


### Adolf

[App page](https://appshunter.io/ios/app/adolf-word-learning/id6445839777)

Learn English vocabulary by listening to words and their translations. This app is designed to help you memorize new words effortlessly, making it ideal for improving listening skills during everyday activities or as a relaxation tool.

**Highlights:** Listen to word pronunciations, View word translations, Choose from different word lists, Learn passively while multitasking, Use as a relaxation aid

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 基础套餐 | $0.99 | one-time |
| 优惠套餐 | $4.99 | one-time |
| 最惠套餐 | $8.99 | one-time |


## Frequently asked questions

### Is 绘本树 free?

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

### Is Adolf free?

Adolf costs $0.99, and also offers in-app purchases.

### Do 绘本树 or Adolf have ads?

Neither 绘本树 nor Adolf shows ads.

### Which is updated more often, 绘本树 or Adolf?

绘本树 ships an update every 3 weeks, and Adolf fortnightly. Most recently, 绘本树 was updated on October 26, 2026 and Adolf 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.*