# 蔡姐姐/茱莉亞 vs 秒可单词

The clearest difference is in-app purchases: 蔡姐姐/茱莉亞 at none against 秒可单词's 4. 秒可单词's advantage is update cadence (weekly vs every 40 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 秒可单词 sells 4 one-off in-app purchases. 蔡姐姐/茱莉亞 asks for nothing beyond the download.

蔡姐姐/茱莉亞 ships an update every 40 months, 秒可单词 weekly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 蔡姐姐/茱莉亞 | 秒可单词 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 84.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 40 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 198 MB | 290 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chi Hsien Lai](https://appshunter.io/developer/1039759515) | [Guangzhou Xuesheng Technology Company Limited](https://appshunter.io/developer/1677780065) |

## What reviewers say

### 蔡姐姐/茱莉亞

[App page](https://appshunter.io/ios/app/id6448341345)

**Features:** macOS Compatibility

**In-app purchases:** none


### 秒可单词

[App page](https://appshunter.io/ios/app/id6754678757)

This app synchronizes with in-class English textbooks, covering vocabulary from elementary to university levels. It offers AI-powered learning tools like phonetic breakdowns and spaced repetition to enhance memorization and understanding.

**Highlights:** Syncs with textbooks, Covers all education levels, Phonetic spelling and root analysis, AI-powered learning, Spaced repetition system, Integrated practice tests

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 年卡 | $6.99 | one-time |
| 永久卡 | $14.99 | one-time |
| 1 年卡 | $19.99 | one-time |
| 永久卡 | $39.99 | one-time |


## Frequently asked questions

### Is 蔡姐姐/茱莉亞 free?

蔡姐姐/茱莉亞 is free to download, with no in-app purchases.

### Is 秒可单词 free?

秒可单词 is free to download, with in-app purchases available.

### Do 蔡姐姐/茱莉亞 or 秒可单词 have ads?

Neither 蔡姐姐/茱莉亞 nor 秒可单词 shows ads.

### Which is updated more often, 蔡姐姐/茱莉亞 or 秒可单词?

蔡姐姐/茱莉亞 ships an update every 40 months, and 秒可单词 weekly. Most recently, 蔡姐姐/茱莉亞 was updated on October 27, 2026 and 秒可单词 on October 25, 2026.

---

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