# Open Book AI Chat vs Soilo

The clearest difference is in-app purchases: Soilo at none against Open Book AI Chat's 1. Soilo also leads on update cadence (weekly vs every 2 months). Open Book AI Chat's advantage is device support (5 vs 3). On price, ads and iOS requirement 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. Soilo asks for nothing beyond the download.

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

## The numbers

| Metric | Open Book AI Chat | Soilo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/open-book-ai-chat/id6446209620/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 52 MB |
| Requires iOS | 16.2 | **15.0** |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Cat Bakery, LLC](https://appshunter.io/developer/1188110325) | [Divyansh Dwivedi](https://appshunter.io/developer/1884859853) |

## 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 |


### Soilo

[App page](https://appshunter.io/ios/app/soilo/id6768271210)

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

**In-app purchases:** none


## Frequently asked questions

### Is Open Book AI Chat free?

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

### Is Soilo free?

Soilo is free to download, with no in-app purchases.

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

Neither Open Book AI Chat nor Soilo shows ads.

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

Open Book AI Chat ships an update every 2 months, and Soilo weekly. Most recently, Open Book AI Chat was updated on October 22, 2026 and Soilo 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.*