# ECHO vs Illusion Corridor

The clearest difference is in-app purchases: ECHO at none against Illusion Corridor's 1. ECHO also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Illusion Corridor sells 1 one-off in-app purchase. ECHO asks for nothing beyond the download.

## The numbers

| Metric | ECHO | Illusion Corridor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/illusion-corridor/id6800756593/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | — | Free with in-app purchases |
| Size | 101 MB | 3 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [wapon Inc.](https://appshunter.io/developer/563984006) | [Qingyu Chen](https://appshunter.io/developer/1629701754) |

## What reviewers say

### ECHO

[App page](https://appshunter.io/ios/app/echo-grids-number-puzzle/id6791798318)

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

**In-app purchases:** none


### Illusion Corridor

[App page](https://appshunter.io/ios/app/illusion-corridor/id6800756593)

This isometric puzzle game challenges players to manipulate perspective and mechanisms to create impossible paths. Explore seven chapters with 65 handcrafted levels, featuring rotating bridges, sliding platforms, and more. Enjoy a quiet, offline experience with no ads or in-app purchases after the initial unlock.

**Highlights:** Isometric perspective puzzles, Manipulate mechanisms and platforms, 65 handcrafted levels, Offline play, No ads or subscriptions, Multiple languages supported

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $2.99 | one-time |


## Frequently asked questions

### Is ECHO free?

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

### Is Illusion Corridor free?

Illusion Corridor is free to download, with in-app purchases available.

### Do ECHO or Illusion Corridor have ads?

Neither ECHO nor Illusion Corridor 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.*