# Linko vs Challenge World

The clearest difference is ads: Challenge World at none against Linko's shown. Challenge World also leads on update cadence (every 5 days vs every 4 weeks). Linko's advantage is iOS requirement (12.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Linko sells 3 one-off in-app purchases and Challenge World sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Linko ships an update every 4 weeks, Challenge World every 5 days. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Linko | Challenge World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (26 ratings)](https://appshunter.io/ios/app/linko-relaxing-loop/id1608997896/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 60.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 158 MB | 88 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [1PixelStudio Co.](https://appshunter.io/developer/1046496163) | [Eric Martial Kameni](https://appshunter.io/developer/1893185746) |

## What reviewers say

### Linko

[App page](https://appshunter.io/ios/app/linko-relaxing-loop/id1608997896)

A simple and calming puzzle game designed for relaxation. Players rotate lines on a board to connect them all, offering an easy-to-learn maze-like experience for all ages. The game's revenue supports a stray cat shelter.

**Highlights:** Simple one-finger controls, Calming maze-like gameplay, Easy to learn for all ages, Rotate lines to connect, Relaxing mind exercise

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donate low price. | $4.99 | one-time |
| Donate medium price. | $19.99 | one-time |
| Donate high price. | $44.99 | one-time |


### Challenge World

[App page](https://appshunter.io/ios/app/challenge-world/id6771152172)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synapse Tier | $0.99 | one-time |
| Cortex Tier | $0.99 | one-time |
| Nexus Tier | $0.99 | one-time |
| Zenith Tier | $0.99 | one-time |
| Apex Tier | $0.99 | one-time |
| Head-to-Head Mode | $0.99 | one-time |


## Frequently asked questions

### Is Linko free?

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

### Is Challenge World free?

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

### Do Linko or Challenge World have ads?

Linko shows ads; Challenge World does not.

### Which is updated more often, Linko or Challenge World?

Linko ships an update every 4 weeks, and Challenge World every 5 days. Most recently, Linko was updated on October 14, 2026 and Challenge World on October 4, 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.*