# OpenBook Intelligence vs Kinship

The clearest difference is in-app purchases: Kinship at none against OpenBook Intelligence's 2. Kinship also leads on update cadence (every 8 days vs every 2 months). OpenBook Intelligence's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price and ads there is nothing between them.

Both are free to download. OpenBook Intelligence sells 2 in-app purchases, starting at $19.99 per month. Kinship asks for nothing beyond the download.

OpenBook Intelligence ships an update every 2 months, Kinship every 8 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | OpenBook Intelligence | Kinship |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/kinship-mom-group-chat/id6768455636/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | — | Free |
| Size | 315 MB | 25 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Moneta Eight FZE LLC](https://appshunter.io/developer/1854308583) | [Kinship App Inc](https://appshunter.io/developer/1781631055) |

## What reviewers say

### OpenBook Intelligence

[App page](https://appshunter.io/ios/app/openbook-intelligence/id6758944434)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenBook Pro | $19.99 | per month |
| OpenBook Pro | $149.99 | per year |


### Kinship

[App page](https://appshunter.io/ios/app/kinship-mom-group-chat/id6768455636)

Connect with other mothers based on your due date or child's age. Share experiences, ask questions, and build a supportive community with private group chats and larger topic-based communities. Features include event planning, direct messaging, and a marketplace for baby items.

**Highlights:** Matched private group chats, Topic-based communities, Event planning and RSVPs, Direct messaging, Marketplace for baby items, Customizable notifications, Photo and post sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenBook Intelligence free?

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

### Is Kinship free?

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

### Do OpenBook Intelligence or Kinship have ads?

Neither OpenBook Intelligence nor Kinship shows ads.

### Which is updated more often, OpenBook Intelligence or Kinship?

OpenBook Intelligence ships an update every 2 months, and Kinship every 8 days. Most recently, OpenBook Intelligence was updated on November 7, 2026 and Kinship on November 9, 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.*