# Spark for Unity Demo vs TethrX

The clearest difference is iOS requirement: Spark for Unity Demo at 15.0 against TethrX's 17.0. 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.

## The numbers

| Metric | Spark for Unity Demo | TethrX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 87 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ludicon LLC](https://appshunter.io/developer/1707820408) | [Nathan Ducatillon](https://appshunter.io/developer/6789156325) |

## What reviewers say

### Spark for Unity Demo

[App page](https://appshunter.io/ios/app/spark-for-unity-demo/id6773539249)

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

**In-app purchases:** none


### TethrX

[App page](https://appshunter.io/ios/app/tethrx/id6792520305)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spark for Unity Demo free?

Spark for Unity Demo is free to download, with no in-app purchases.

### Is TethrX free?

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

### Do Spark for Unity Demo or TethrX have ads?

Neither Spark for Unity Demo nor TethrX shows 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.*