# ChatThread vs Ktulhu AI

The clearest difference is in-app purchases: Ktulhu AI at none against ChatThread's 6. Ktulhu AI also leads on update cadence (every 4 days vs every 2 months). ChatThread's advantage is iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. ChatThread sells 6 one-off in-app purchases. Ktulhu AI asks for nothing beyond the download.

ChatThread ships an update every 2 months, Ktulhu AI every 4 days. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ChatThread | Ktulhu AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 41 MB | 1 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [鞯 赵](https://appshunter.io/developer/1567856103) | [Yaroslav Vynnychuk](https://appshunter.io/developer/1864199771) |

## What reviewers say

### ChatThread

[App page](https://appshunter.io/ios/app/chatthread-ai-chat-and-workflow/id6744828531)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Gold | $3.99 | one-time |
| 500 Gold | $17.99 | one-time |
| 1000 Gold | $29.99 | one-time |
| 2000 Gold | $59.99 | one-time |
| 5000 Gold | $129.99 | one-time |
| 8000 Gold | $199.99 | one-time |


### Ktulhu AI

[App page](https://appshunter.io/ios/app/ktulhu-ai/id6757174786)

**In-app purchases:** none


## Frequently asked questions

### Is ChatThread free?

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

### Is Ktulhu AI free?

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

### Do ChatThread or Ktulhu AI have ads?

Neither ChatThread nor Ktulhu AI shows ads.

### Which is updated more often, ChatThread or Ktulhu AI?

ChatThread ships an update every 2 months, and Ktulhu AI every 4 days. Most recently, ChatThread was updated on October 25, 2026 and Ktulhu AI on October 7, 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.*