# Kioku vs Clair Mind

The clearest difference is in-app purchases: Kioku at none against Clair Mind's 3. Kioku also leads on update cadence (every 2 days vs monthly). Clair Mind's advantage is iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Clair Mind sells 3 in-app purchases, starting at $5.99 per 7 days. Kioku asks for nothing beyond the download.

Kioku ships an update every 2 days, Clair Mind monthly. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Kioku | Clair Mind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Size | 51 MB | 25 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kai Kang](https://appshunter.io/developer/1757164832) | [Ziad Emadaldeen](https://appshunter.io/developer/1893606141) |

## What reviewers say

### Kioku

[App page](https://appshunter.io/ios/app/kioku-private-second-brain/id6762234661)

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

**In-app purchases:** none


### Clair Mind

[App page](https://appshunter.io/ios/app/clair-mind-ai-organized-notes/id6762269736)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clair Mind Pro Weekly | $5.99 | per 7 days |
| Clair Mind Pro Weekly + Trial | $7.99 | per 7 days |
| Clair Mind Pro | $79.99 | per year |


## Frequently asked questions

### Is Kioku free?

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

### Is Clair Mind free?

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

### Do Kioku or Clair Mind have ads?

Neither Kioku nor Clair Mind shows ads.

### Which is updated more often, Kioku or Clair Mind?

Kioku ships an update every 2 days, and Clair Mind monthly. Most recently, Kioku was updated on September 29, 2026 and Clair Mind on October 2, 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.*