# Chatosai vs Ariv

The clearest difference is in-app purchases: Ariv at none against Chatosai's 2. Chatosai's advantage is update cadence (every 5 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Chatosai ships an update every 5 days, Ariv every 2 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | Chatosai | Ariv |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 52 MB | 37 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hasna Dedoush](https://appshunter.io/developer/1883805133) | [Ariv Studios](https://appshunter.io/developer/1881812958) |

## What reviewers say

### Chatosai

[App page](https://appshunter.io/ios/app/chatosai/id6760315763)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Chatosai Monthly | $19.99 | per month |
| Premium Chatosai | $199.99 | per year |


### Ariv

[App page](https://appshunter.io/ios/app/ariv-notes-pkm-second-brain/id6776939051)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chatosai free?

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

### Is Ariv free?

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

### Do Chatosai or Ariv have ads?

Neither Chatosai nor Ariv shows ads.

### Which is updated more often, Chatosai or Ariv?

Chatosai ships an update every 5 days, and Ariv every 2 months. Most recently, Chatosai was updated on October 28, 2026 and Ariv on October 28, 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.*