# VoidMatter vs Zerko

The clearest difference is review sentiment: Zerko at 93% against VoidMatter's 0%. Zerko also leads on rating (4.9 vs 2.0) and iOS requirement (12.0 vs 16.0). VoidMatter's advantage is price ($0.99 vs $2.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

VoidMatter costs $0.99 and Zerko $2.99 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 2.0. Both are backed by a comparable volume of ratings — 7 and 14 respectively. Written reviews point the same way: 0% of VoidMatter's written reviews are positive against 93% of Zerko's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | VoidMatter | Zerko |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | [2.0 (7 ratings)](https://appshunter.io/ios/app/voidmatter/id1357788325/reviews) | **[4.9 (14 ratings)](https://appshunter.io/ios/app/zerko/id6470181559/reviews)** |
| Number of ratings | 7 | **14** |
| Positive reviews | 0.0% of reviews | **93.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Paid | Paid |
| Size | 2 MB | 100 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lucas Assis Rodrigues](https://appshunter.io/developer/1357788324) | [Maciej Targoni](https://appshunter.io/developer/495165602) |

## What reviewers say

### VoidMatter

[App page](https://appshunter.io/ios/app/voidmatter/id1357788325)

Explore a visually stunning and calming interactive experience. Watch intricate fractal shapes materialize as you follow simple on-screen prompts. All graphics are dynamically generated by code.

**Highlights:** Interactive fractal generation, Code-based graphics, Relaxing visual experience, Watch complication for saving images, Simple on-screen instructions

**In-app purchases:** none


### 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 VoidMatter free?

VoidMatter costs $0.99, with no in-app purchases.

### Is Zerko free?

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

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

Zerko is rated higher. VoidMatter averages 2.0 out of 5 from 7 ratings, while Zerko averages 4.9 from 14 ratings.

### Do VoidMatter or Zerko have ads?

Neither VoidMatter nor Zerko shows ads.

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

VoidMatter ships an update every 3 weeks, and Zerko every 3 weeks. Most recently, VoidMatter was updated on October 1, 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.*