# Pixel Islet vs Pasterium C

The clearest difference is ads: Pasterium C at none against Pixel Islet's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

Pixel Islet ships an update every 10 days, Pasterium C every 5 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Pixel Islet | Pasterium C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 5 days** |
| Size | 58 MB | 19 MB |
| Requires iOS | 16.2 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sho Iwasaki](https://appshunter.io/developer/1896559280) | [KENICHI TAKAOKA](https://appshunter.io/developer/6804616082) |

## What reviewers say

### Pixel Islet

[App page](https://appshunter.io/ios/app/pixel-islet/id6801587711)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $5.99 | one-time |


### Pasterium C

[App page](https://appshunter.io/ios/app/pasterium-c/id6817622470)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study with a Bookshelf | $2.99 | one-time |


## Frequently asked questions

### Is Pixel Islet free?

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

### Is Pasterium C free?

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

### Do Pixel Islet or Pasterium C have ads?

Pixel Islet shows ads; Pasterium C does not.

### Which is updated more often, Pixel Islet or Pasterium C?

Pixel Islet ships an update every 10 days, and Pasterium C every 5 days. Most recently, Pixel Islet was updated on October 24, 2026 and Pasterium C on October 26, 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.*