# Zerko vs Gridbusters

The clearest difference is ratings volume: Zerko at 14 against Gridbusters's 2. Zerko also leads on iOS requirement (12.0 vs 15.1). Gridbusters's advantage is price ($0.99 vs $2.99). On rating, review sentiment, update cadence and ads there is nothing between them.

Zerko costs $2.99 and Gridbusters $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for Zerko against 5.0 for Gridbusters. That said, the two scores are not equally well evidenced: Zerko has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 93% of Zerko's written reviews are positive against 100% of Gridbusters's.

Zerko ships an update every 3 weeks, Gridbusters fortnightly. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Zerko | Gridbusters |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | [4.9 (14 ratings)](https://appshunter.io/ios/app/zerko/id6470181559/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gridbusters/id6778786355/reviews)** |
| Number of ratings | **14** | 2 |
| Positive reviews | 93.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 100 MB | 35 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maciej Targoni](https://appshunter.io/developer/495165602) | [Rybro Games](https://appshunter.io/developer/6778786358) |

## 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


### Gridbusters

[App page](https://appshunter.io/ios/app/gridbusters/id6778786355)

A solo puzzle game where players fill a grid by placing numbers in sequential order. Each move has strict placement rules, testing memory, spatial thinking, and planning skills. Compete globally on leaderboards and replay endlessly with varied challenges.

**Highlights:** Sequential number placement, Strict move rules, Memory and spatial training, Multiple grid sizes, Global leaderboards, Undo functionality, Endless replayability

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

**In-app purchases:** none


## Frequently asked questions

### Is Zerko free?

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

### Is Gridbusters free?

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

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

Gridbusters is rated higher. Zerko averages 4.9 out of 5 from 14 ratings, while Gridbusters averages 5.0 from 2 ratings.

### Do Zerko or Gridbusters have ads?

Neither Zerko nor Gridbusters shows ads.

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

Zerko ships an update every 3 weeks, and Gridbusters fortnightly. Most recently, Zerko was updated on October 16, 2026 and Gridbusters on October 13, 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.*