# Open Book AI Chat vs CloudyAI

The clearest difference is rating: Open Book AI Chat at 5.0 against CloudyAI's 4.2. Open Book AI Chat also leads on device support (5 vs 1). CloudyAI's advantage is update cadence (every 3 days vs every 2 months) and ratings volume (110 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Open Book AI Chat sells 1 in-app purchase, starting at $3.99 per 7 days and CloudyAI sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Open Book AI Chat holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: CloudyAI has 110 ratings behind it against 2, so its average is the more settled of the two.

Open Book AI Chat ships an update every 2 months, CloudyAI every 3 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Open Book AI Chat | CloudyAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/open-book-ai-chat/id6446209620/reviews)** | [4.2 (110 ratings)](https://appshunter.io/ios/app/cloudyai-ask-anything-chatbot/id6479015327/reviews) |
| Number of ratings | 2 | **110** |
| Positive reviews | — | 36.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 54 MB | 12 MB |
| Requires iOS | **16.2** | 16.4 |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch** | iPhone |
| Age rating | 9+ | 12+ |
| Developer | [Cat Bakery, LLC](https://appshunter.io/developer/1188110325) | [Deepansh Jagga](https://appshunter.io/developer/1615736983) |

## What reviewers say

### Open Book AI Chat

[App page](https://appshunter.io/ios/app/open-book-ai-chat/id6446209620)

This AI chat application leverages advanced natural language processing to enhance communication and productivity. It facilitates efficient interactions with colleagues, clients, and friends for collaboration, business, or personal connections.

**Highlights:** Advanced natural language processing, Streamlined communication, Team collaboration, Client interaction, Personal messaging

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Open Book AI T1 | $3.99 | per 7 days |


### CloudyAI

[App page](https://appshunter.io/ios/app/cloudyai-ask-anything-chatbot/id6479015327)

This AI-powered chatbot assists with various tasks for personal or business use. It offers specialized AI skills like content writing and problem-solving, with over 20 pre-made prompts. Chats are automatically saved for easy reference.

**Highlights:** AI chatbot powered by advanced AI, Specialized AI skills (content writer, problem solver, etc.), Over 20 ready-made prompts, Automatic chat history saving, Personal and business use cases

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Monthly | $9.99 | per month |
| Pro 6 Months | $24.99 | per 6 months |
| Pro Yearly | $59.99 | per year |


## Frequently asked questions

### Is Open Book AI Chat free?

Open Book AI Chat is free to download, with in-app purchases available.

### Is CloudyAI free?

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

### Which has better reviews, Open Book AI Chat or CloudyAI?

Open Book AI Chat is rated higher. Open Book AI Chat averages 5.0 out of 5 from 2 ratings, while CloudyAI averages 4.2 from 110 ratings.

### Do Open Book AI Chat or CloudyAI have ads?

Neither Open Book AI Chat nor CloudyAI shows ads.

### Which is updated more often, Open Book AI Chat or CloudyAI?

Open Book AI Chat ships an update every 2 months, and CloudyAI every 3 days. Most recently, Open Book AI Chat was updated on November 3, 2026 and CloudyAI on November 8, 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.*