# Screen Test Utility vs Zelmux

The clearest difference is price: Zelmux at Free against Screen Test Utility's $1.99. Zelmux also leads on update cadence (every 3 weeks vs every 24 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Zelmux is free to download; Screen Test Utility costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Screen Test Utility ships an update every 24 months, Zelmux every 3 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Screen Test Utility | Zelmux |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.0 (8 ratings)](https://appshunter.io/ios/app/screen-test-utility/id1529055554/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 6 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Twosome Solutions LLC](https://appshunter.io/developer/601620281) | [Yang Zhang](https://appshunter.io/developer/1005259025) |

## What reviewers say

### Screen Test Utility

[App page](https://appshunter.io/ios/app/screen-test-utility/id1529055554)

Verify your iOS device's touchscreen functionality with this straightforward tool. It allows you to test every touch point, ensuring accurate response, especially after repairs or if the screen is damaged. Enjoy a clean, ad-free experience for a one-time purchase.

**Highlights:** Test every touch point, Verify touchscreen performance, Ideal for cracked or repaired screens, Ad-free experience, One-time purchase

**In-app purchases:** none


### Zelmux

[App page](https://appshunter.io/ios/app/zelmux/id6768126927)

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

**In-app purchases:** none


## Frequently asked questions

### Is Screen Test Utility free?

Screen Test Utility costs $1.99, with no in-app purchases.

### Is Zelmux free?

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

### Do Screen Test Utility or Zelmux have ads?

Neither Screen Test Utility nor Zelmux shows ads.

### Which is updated more often, Screen Test Utility or Zelmux?

Screen Test Utility ships an update every 24 months, and Zelmux every 3 weeks. Most recently, Screen Test Utility was updated on October 3, 2026 and Zelmux on October 8, 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.*