# AI ChatBot vs Open Book AI Chat

The clearest difference is rating: Open Book AI Chat at 5.0 against AI ChatBot's 4.6. Open Book AI Chat also leads on device support (5 vs 2). AI ChatBot's advantage is ratings volume (387 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AI ChatBot sells 1 in-app purchase, starting at $19.99 per year and Open Book AI Chat sells 1 in-app purchase, starting at $3.99 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 4.6. That said, the two scores are not equally well evidenced: AI ChatBot has 387 ratings behind it against 2, so its average is the more settled of the two.

AI ChatBot ships an update every 6 weeks, Open Book AI Chat every 2 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | AI ChatBot | Open Book AI Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (387 ratings)](https://appshunter.io/ios/app/ai-chatbot-virtual-assistant/id1661312606/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/open-book-ai-chat/id6446209620/reviews)** |
| Number of ratings | **387** | 2 |
| Positive reviews | 21.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 54 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Apple TV, Apple Watch** |
| Age rating | 4+ | 9+ |
| Developer | [London App Studio Ltd](https://appshunter.io/developer/1567773800) | [Cat Bakery, LLC](https://appshunter.io/developer/1188110325) |

## What reviewers say

### AI ChatBot

[App page](https://appshunter.io/ios/app/ai-chatbot-virtual-assistant/id1661312606)

This AI-powered assistant helps you chat smarter and faster with lifelike conversations. It offers features like automatic replies, image sharing, and brainstorming assistance, all within a private and secure interface.

**Highlights:** Lifelike AI conversations, Automatic replies, Customized answers, Image sharing, Brainstorming assistance, Private and secure

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatBOT Pro | $19.99 | per year |

**What reviewers like**

- 👍 Potential for virtual friend
- 👍 Easy to use with voiceover
- 💡 UK-based developer
- 💡 Great tool potential
- 👍 Happy to contribute subscription

**What reviewers complain about**

- 🐛 Frequent app crashes
- 🐛 Does not answer questions
- 🐛 Chat history lost
- 💰 Waste of money
- 💰 Greedy app

**Reported bugs**

- App always crashing
- App crashes a lot
- App crashes a lot when asked question
- Lost chat history first during inline purchase
- App crashed and the chat was lost again

**Requested features**

- ChatGPT in Catalan Language


### 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 |


## Frequently asked questions

### Is AI ChatBot free?

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

### Is Open Book AI Chat free?

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

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

Open Book AI Chat is rated higher. AI ChatBot averages 4.6 out of 5 from 387 ratings, while Open Book AI Chat averages 5.0 from 2 ratings.

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

Neither AI ChatBot nor Open Book AI Chat shows ads.

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

AI ChatBot ships an update every 6 weeks, and Open Book AI Chat every 2 months. Most recently, AI ChatBot was updated on October 24, 2026 and Open Book AI Chat on October 22, 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.*