# Unloop vs Zerko

The clearest difference is price: Unloop at Free against Zerko's $2.99. Unloop also leads on ratings volume (50 vs 14) and iOS requirement (10.0 vs 12.0). Zerko's advantage is in-app purchases (none vs 1). On rating, review sentiment, update cadence and ads there is nothing between them.

Unloop is free to download; Zerko costs $2.99 up front. Unloop sells 1 one-off in-app purchase. Zerko asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Unloop against 4.9 for Zerko. Both are backed by a comparable volume of ratings — 50 and 14 respectively. Written reviews are what separate them: 100% of Unloop's written reviews are positive against 93% of Zerko's.

Unloop ships an update every 2 weeks, Zerko every 3 weeks. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Unloop | Zerko |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (50 ratings)](https://appshunter.io/ios/app/unloop/id1632256862/reviews)** | [4.9 (14 ratings)](https://appshunter.io/ios/app/zerko/id6470181559/reviews) |
| Number of ratings | **50** | 14 |
| Positive reviews | **100.0% of reviews** | 93.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 61 MB | 100 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jurij Galievskij](https://appshunter.io/developer/1624709666) | [Maciej Targoni](https://appshunter.io/developer/495165602) |

## What reviewers say

### Unloop

[App page](https://appshunter.io/ios/app/unloop/id1632256862)

A minimalist puzzle game offering a calming and engaging experience. Solve intricate levels by eliminating blue portals at your own pace, with no distractions or timers. Enjoy a soothing soundtrack and a creative challenge for all ages.

**Highlights:** Calm and minimalist puzzle gameplay, 150 intricately designed levels, Distraction-free environment, Soothing ambient soundtrack, Progressively introduced mechanics, Stress-relieving experience

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all Levels | $1.99 | one-time |


### Zerko

[App page](https://appshunter.io/ios/app/zerko/id6470181559)

A relaxing puzzle game where you strategically place blocks to make all numbers on the board equal zero. Enjoy a no-pressure experience with calming audio and no in-app purchases or ads.

**Highlights:** Zero-sum number puzzles, Strategic block placement, Relaxing gameplay, No time pressure, No in-app purchases, No ads

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

**In-app purchases:** none


## Frequently asked questions

### Is Unloop free?

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

### Is Zerko free?

Zerko costs $2.99, with no in-app purchases.

### Which has better reviews, Unloop or Zerko?

Unloop is rated higher. Unloop averages 5.0 out of 5 from 50 ratings, while Zerko averages 4.9 from 14 ratings.

### Do Unloop or Zerko have ads?

Neither Unloop nor Zerko shows ads.

### Which is updated more often, Unloop or Zerko?

Unloop ships an update every 2 weeks, and Zerko every 3 weeks. Most recently, Unloop was updated on October 2, 2026 and Zerko on September 30, 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.*