# Zen Power Exam vs StackRush Impossible

The clearest difference is price: Zen Power Exam at Free against StackRush Impossible's $0.99. Zen Power Exam also leads on iOS requirement (12.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Zen Power Exam is free to download; StackRush Impossible costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Zen Power Exam | StackRush Impossible |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 8 days | — |
| Size | 40 MB | 8 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Katsuya Kawase](https://appshunter.io/developer/1749728640) | [Liam Murray](https://appshunter.io/developer/1887420852) |

## What reviewers say

### Zen Power Exam

[App page](https://appshunter.io/ios/app/zen-power-exam/id6504720230)

**Features:** macOS Compatibility

**In-app purchases:** none


### StackRush Impossible

[App page](https://appshunter.io/ios/app/stackrush-impossible/id6761103791)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zen Power Exam free?

Zen Power Exam is free to download, with no in-app purchases.

### Is StackRush Impossible free?

StackRush Impossible costs $0.99, with no in-app purchases.

### Do Zen Power Exam or StackRush Impossible have ads?

Both Zen Power Exam and StackRush Impossible show ads.

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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.*