# duk. vs Illusion Corridor

The clearest difference is in-app purchases: duk. at none against Illusion Corridor's 1. Illusion Corridor's advantage is update cadence (every 2 days vs every 5 days) and iOS requirement (16.0 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for duk. against 5.0 for Illusion Corridor. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

duk. ships an update every 5 days, Illusion Corridor every 2 days. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | duk. | Illusion Corridor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/duk/id6778465982/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/illusion-corridor/id6800756593/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 3 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Betula Noir LLC](https://appshunter.io/developer/6778465985) | [Qingyu Chen](https://appshunter.io/developer/1629701754) |

## What reviewers say

### duk.

[App page](https://appshunter.io/ios/app/duk/id6778465982)

A charming puzzle game where you guide a character across lily pads by stepping a specific number of spaces. Solve 80 unique ponds in classic mode or tackle a new daily challenge. Enjoy a relaxing, ad-free experience with no internet or accounts required.

**Highlights:** Numbered lily pad stepping mechanic, 80 classic ponds, Daily puzzles (easy, medium, hard), Streak tracking for daily play, No ads or accounts, Offline play

**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 duk. free?

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

### Is Illusion Corridor free?

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

### Which has better reviews, duk. or Illusion Corridor?

duk. and Illusion Corridor are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do duk. or Illusion Corridor have ads?

Neither duk. nor Illusion Corridor shows ads.

### Which is updated more often, duk. or Illusion Corridor?

duk. ships an update every 5 days, and Illusion Corridor every 2 days. Most recently, duk. was updated on September 30, 2026 and Illusion Corridor on October 1, 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.*