# Zerko vs Sokobond Express

The clearest difference is review sentiment: Zerko at 93% against Sokobond Express's 60%. Zerko also leads on rating (4.9 vs 4.7) and price ($2.99 vs $5.99). Sokobond Express's advantage is update cadence (every 9 days vs every 3 weeks). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Zerko costs $2.99 and Sokobond Express $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zerko holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 14 and 6 respectively. Written reviews point the same way: 93% of Zerko's written reviews are positive against 60% of Sokobond Express's.

Zerko ships an update every 3 weeks, Sokobond Express every 9 days. The most recent releases landed on September 11, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Zerko | Sokobond Express |
| --- | --- | --- |
| Price | **$2.99** | $5.99 |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/zerko/id6470181559/reviews)** | [4.7 (6 ratings)](https://appshunter.io/ios/app/sokobond-express/id6484275400/reviews) |
| Number of ratings | **14** | 6 |
| Positive reviews | **93.3% of reviews** | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 100 MB | 318 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maciej Targoni](https://appshunter.io/developer/495165602) | [Draknek Limited](https://appshunter.io/developer/482086711) |

## What reviewers say

### 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


### Sokobond Express

[App page](https://appshunter.io/ios/app/sokobond-express/id6484275400)

A minimalist puzzle game blending chemical bonds with pathfinding challenges. It offers a deep yet accessible experience, allowing players to engage with chemistry concepts through intuitive gameplay and rewarding puzzle-solving, without needing prior knowledge.

**Highlights:** Minimalist design, Chemical bond puzzles, Pathfinding mechanics, Intuitive gameplay, Rewarding puzzle solving, No prior chemistry knowledge required

**In-app purchases:** none


## Frequently asked questions

### Is Zerko free?

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

### Is Sokobond Express free?

Sokobond Express costs $5.99, with no in-app purchases.

### Which has better reviews, Zerko or Sokobond Express?

Zerko is rated higher. Zerko averages 4.9 out of 5 from 14 ratings, while Sokobond Express averages 4.7 from 6 ratings.

### Do Zerko or Sokobond Express have ads?

Neither Zerko nor Sokobond Express shows ads.

### Which is updated more often, Zerko or Sokobond Express?

Zerko ships an update every 3 weeks, and Sokobond Express every 9 days. Most recently, Zerko was updated on September 11, 2026 and Sokobond Express on September 23, 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.*