# EchoVision vs Optic Illusion

The clearest difference is iOS requirement: EchoVision at 17.0 against Optic Illusion's 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.

## The numbers

| Metric | EchoVision | Optic Illusion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/echovision/id6499540865/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 85 MB | 5 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Holo Interactive US, Inc.](https://appshunter.io/developer/1652143524) | [Apps From Outer Space, LLC](https://appshunter.io/developer/673290835) |

## What reviewers say

### EchoVision

[App page](https://appshunter.io/ios/app/echovision/id6499540865)

Experience the world through the eyes of a bat with this mixed reality art installation. Using a bat-shaped mask and your smartphone's LiDAR, visualize echoes and understand echolocation. It offers a unique perspective on non-human sensory perception and promotes ecological appreciation.

**Highlights:** Simulates bat echolocation, Mixed reality art experience, Handheld bat-shaped masks, Smartphone LiDAR integration, Visualizes propagating echoes, Promotes ecocentric design perspective

**Features:** macOS Compatibility

**In-app purchases:** none


### Optic Illusion

[App page](https://appshunter.io/ios/app/optic-illusion-eye-tricks/id6797143310)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EchoVision free?

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

### Is Optic Illusion free?

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

### Do EchoVision or Optic Illusion have ads?

Neither EchoVision nor Optic Illusion 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.*