# Sunja vs Kawn

The clearest difference is ads: Kawn at none against Sunja's shown. Kawn also leads on update cadence (every 9 days vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Sunja sells 2 in-app purchases, starting at $29.99 per month and Kawn sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sunja ships an update every 5 months, Kawn every 9 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Sunja | Kawn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 9 days** |
| Size | 70 MB | 17 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sunja Labs Private Limited](https://appshunter.io/developer/1774734869) | [Tariq Al-aqrabawi](https://appshunter.io/developer/1877383192) |

## What reviewers say

### Sunja

[App page](https://appshunter.io/ios/app/sunja-interactive-3d-science/id6760365462)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Learning | $29.99 | per month |
| Annual Learning | $199.99 | per year |


### Kawn

[App page](https://appshunter.io/ios/app/kawn-science-encyclopedia/id6812048660)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Sunja free?

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

### Is Kawn free?

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

### Do Sunja or Kawn have ads?

Sunja shows ads; Kawn does not.

### Which is updated more often, Sunja or Kawn?

Sunja ships an update every 5 months, and Kawn every 9 days. Most recently, Sunja was updated on October 7, 2026 and Kawn 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.*