# CurioSeed vs Kayf

The clearest difference is iOS requirement: Kayf at 18.0 against CurioSeed's 26.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CurioSeed sells 1 one-off in-app purchase and Kayf sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CurioSeed ships an update every 4 days, Kayf every 5 days. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | CurioSeed | Kayf |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Size | 10 MB | 18 MB |
| Requires iOS | 26.5 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [耀民 王](https://appshunter.io/developer/1789459947) | [Tariq Al-aqrabawi](https://appshunter.io/developer/1877383192) |

## What reviewers say

### CurioSeed

[App page](https://appshunter.io/ios/app/curioseed-how-things-work/id6809521678)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Photo Recognitions | $2.99 | one-time |


### Kayf

[App page](https://appshunter.io/ios/app/kayf-how-things-work/id6813402468)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kayf Pro | $4.99 | one-time |


## Frequently asked questions

### Is CurioSeed free?

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

### Is Kayf free?

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

### Do CurioSeed or Kayf have ads?

Neither CurioSeed nor Kayf shows ads.

### Which is updated more often, CurioSeed or Kayf?

CurioSeed ships an update every 4 days, and Kayf every 5 days. Most recently, CurioSeed was updated on October 16, 2026 and Kayf on October 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.*