# Fifteens vs Illusion Corridor

The clearest difference is update cadence: Illusion Corridor at every 2 days against Fifteens's every 4 weeks. Fifteens's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Fifteens sells 2 one-off in-app purchases and Illusion Corridor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Fifteens ships an update every 4 weeks, Illusion Corridor every 2 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fifteens | 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 3 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Maxim Pakhotin](https://appshunter.io/developer/1204479244) | [Qingyu Chen](https://appshunter.io/developer/1629701754) |

## What reviewers say

### Fifteens

[App page](https://appshunter.io/ios/app/fifteens-3d/id1327307182)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All dimensions | $1.99 | one-time |
| Full version | $2.99 | one-time |


### 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 Fifteens free?

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

### Is Illusion Corridor free?

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

### Do Fifteens or Illusion Corridor have ads?

Neither Fifteens nor Illusion Corridor shows ads.

### Which is updated more often, Fifteens or Illusion Corridor?

Fifteens ships an update every 4 weeks, and Illusion Corridor every 2 days. Most recently, Fifteens was updated on November 11, 2026 and Illusion Corridor on October 31, 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.*