# Prism vs Simple Viewer

The clearest difference is update cadence: Simple Viewer at monthly against Prism's every 6 months. Simple Viewer also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Prism ships an update every 6 months, Simple Viewer monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Prism | Simple Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 23 MB | 6 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Kerem COLAK](https://appshunter.io/developer/1892405253) | [STLink](https://appshunter.io/developer/1382605307) |

## What reviewers say

### Prism

[App page](https://appshunter.io/ios/app/prism-ai-playground/id6762004681)

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

**In-app purchases:** none


### Simple Viewer

[App page](https://appshunter.io/ios/app/simple-viewer/id6762638850)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prism free?

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

### Is Simple Viewer free?

Simple Viewer is free to download, with no in-app purchases.

### Do Prism or Simple Viewer have ads?

Neither Prism nor Simple Viewer shows ads.

### Which is updated more often, Prism or Simple Viewer?

Prism ships an update every 6 months, and Simple Viewer monthly. Most recently, Prism was updated on October 25, 2026 and Simple Viewer on October 24, 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.*