# 剑桥英语大全 vs 写作助手与文案神器：CatAI

The clearest difference is price: 写作助手与文案神器：CatAI at Free against 剑桥英语大全's $1.99. 写作助手与文案神器：CatAI also leads on update cadence (every 10 days vs every 22 months). 剑桥英语大全's advantage is in-app purchases (none vs 9) and iOS requirement (12.0 vs 15.0). On ads and device support there is nothing between them.

写作助手与文案神器：CatAI is free to download; 剑桥英语大全 costs $1.99 up front. 写作助手与文案神器：CatAI sells 9 in-app purchases, starting at $2.99 per 7 days. 剑桥英语大全 asks for nothing beyond the download.

剑桥英语大全 ships an update every 22 months, 写作助手与文案神器：CatAI every 10 days. The most recent releases landed on October 9, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 剑桥英语大全 | 写作助手与文案神器：CatAI |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.6 (23 ratings)](https://appshunter.io/ios/app/catai/id6444237969/reviews)** |
| Number of ratings | — | **23** |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 61 MB | 29 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [强 马](https://appshunter.io/developer/508741531) | [Xin Chen](https://appshunter.io/developer/425936137) |

## What reviewers say

### 剑桥英语大全

[App page](https://appshunter.io/ios/app/id1579052249)

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

**In-app purchases:** none


### 写作助手与文案神器：CatAI

[App page](https://appshunter.io/ios/app/catai/id6444237969)

This app acts as a versatile AI assistant for daily tasks, offering intelligent writing, question answering, and text recognition. It supports multiple languages and platforms, providing expert advice across various domains to enhance productivity and learning.

**Highlights:** Intelligent writing and content creation, Question answering and explanation, Voice-to-text and image-to-text recognition, Multi-language support, Expert advice across various domains, Task and time management assistance

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Monthly Premium | $4.99 | per month |
| Quarterly Premium | $14.99 | per 3 months |
| Yearly Premium | $19.99 | per year |
| 30积分 | $0.39 | one-time |
| 80积分 | $0.79 | one-time |
| 500积分 | $4.99 | one-time |
| 1000积分 | $7.99 | one-time |
| Lifetime Premium | $39.99 | one-time |


## Frequently asked questions

### Is 剑桥英语大全 free?

剑桥英语大全 costs $1.99, with no in-app purchases.

### Is 写作助手与文案神器：CatAI free?

写作助手与文案神器：CatAI is free to download, with in-app purchases available.

### Do 剑桥英语大全 or 写作助手与文案神器：CatAI have ads?

Neither 剑桥英语大全 nor 写作助手与文案神器：CatAI shows ads.

### Which is updated more often, 剑桥英语大全 or 写作助手与文案神器：CatAI?

剑桥英语大全 ships an update every 22 months, and 写作助手与文案神器：CatAI every 10 days. Most recently, 剑桥英语大全 was updated on October 9, 2026 and 写作助手与文案神器：CatAI on October 21, 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.*