# Ktulhu AI vs PhiNote

The clearest difference is in-app purchases: Ktulhu AI at none against PhiNote's 1. Ktulhu AI also leads on update cadence (every 4 days vs every 3 months). PhiNote's advantage is iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. PhiNote sells 1 one-off in-app purchase. Ktulhu AI asks for nothing beyond the download.

Ktulhu AI ships an update every 4 days, PhiNote every 3 months. Both last shipped on October 31, 2026.

## The numbers

| Metric | Ktulhu AI | PhiNote |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 months |
| Size | 1 MB | 77 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Yaroslav Vynnychuk](https://appshunter.io/developer/1864199771) | [PHIORANEX PRIVATE LIMITED](https://appshunter.io/developer/6785037340) |

## What reviewers say

### Ktulhu AI

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

**In-app purchases:** none


### PhiNote

[App page](https://appshunter.io/ios/app/phinote/id6789886631)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PhiNote Pro | $0.99 | one-time |


## Frequently asked questions

### Is Ktulhu AI free?

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

### Is PhiNote free?

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

### Do Ktulhu AI or PhiNote have ads?

Neither Ktulhu AI nor PhiNote shows ads.

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

Ktulhu AI ships an update every 4 days, and PhiNote every 3 months. Most recently, Ktulhu AI was updated on October 31, 2026 and PhiNote on October 31, 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.*