# 学习成长21天 vs Aha Time

The clearest difference is in-app purchases: 学习成长21天 at none against Aha Time's 4. 学习成长21天 also leads on iOS requirement (9.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Aha Time sells 4 in-app purchases, starting at $19.99 per month. 学习成长21天 asks for nothing beyond the download.

学习成长21天 ships an update weekly, Aha Time every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 学习成长21天 | Aha Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/aha-time/id6790645674/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 66 MB | 194 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangdong Youyixue Education Technology Co., Ltd.](https://appshunter.io/developer/1508981243) | [Aha Time Education](https://appshunter.io/developer/6790645676) |

## What reviewers say

### 学习成长21天

[App page](https://appshunter.io/ios/app/21/id1518769944)

**In-app purchases:** none


### Aha Time

[App page](https://appshunter.io/ios/app/aha-time/id6790645674)

This app offers graded news articles and tech content in English, adapting to your reading level. It features multiple difficulty levels for each story, making it suitable for both children and adults to improve their English comprehension and stay informed about current events.

**Highlights:** Graded reading levels for each story, Global news and AI/tech content tracks, Placement test for personalized level, Audio warm-ups and read-aloud practice, Vocabulary reinforcement across stories, Family-friendly shared learning topics

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月会员 | $19.99 | per month |
| 年度会员 | $179.99 | per year |
| 往期课程 1 个月 | $9.99 | one-time |
| 往期课程，近 2 个月 | $24.99 | one-time |


## Frequently asked questions

### Is 学习成长21天 free?

学习成长21天 is free to download, with no in-app purchases.

### Is Aha Time free?

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

### Do 学习成长21天 or Aha Time have ads?

Neither 学习成长21天 nor Aha Time shows ads.

### Which is updated more often, 学习成长21天 or Aha Time?

学习成长21天 ships an update weekly, and Aha Time every 4 days. Most recently, 学习成长21天 was updated on October 25, 2026 and Aha Time 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.*