# Zerko vs boop.

The clearest difference is price: boop. at Free against Zerko's $2.99. boop. also leads on update cadence (every 3 days vs every 3 weeks). Zerko's advantage is in-app purchases (none vs 4) and ads (none vs shown). On rating, review sentiment, ratings volume and device support there is nothing between them.

boop. is free to download; Zerko costs $2.99 up front. boop. sells 4 one-off in-app purchases. Zerko asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Zerko against 5.0 for boop.. Both are backed by a comparable volume of ratings — 14 and 7 respectively. Written reviews are what separate them: 93% of Zerko's written reviews are positive against 100% of boop.'s.

Zerko ships an update every 3 weeks, boop. every 3 days. The most recent releases landed on September 11, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Zerko | boop. |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.9 (14 ratings)](https://appshunter.io/ios/app/zerko/id6470181559/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/boop/id6479205625/reviews)** |
| Number of ratings | **14** | 7 |
| Positive reviews | 93.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 100 MB | 35 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maciej Targoni](https://appshunter.io/developer/495165602) | [Joshua Shadik](https://appshunter.io/developer/1735161678) |

## 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


### boop.

[App page](https://appshunter.io/ios/app/boop/id6479205625)

A minimalist puzzle game where you slide blocks to reach a goal. Features 50 challenging levels with unique jelly block physics. Offers both light and dark modes that adapt to your device.

**Highlights:** 50 challenging levels, Jelly block physics, Light and dark modes, Slide-to-move gameplay, Goal-oriented puzzles

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Expanded Undo | $0.99 | one-time |
| 15 Hints | $0.99 | one-time |
| 50 Hints | $1.99 | one-time |
| 100 Hints | $2.99 | one-time |


## Frequently asked questions

### Is Zerko free?

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

### Is boop. free?

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

### Which has better reviews, Zerko or boop.?

boop. is rated higher. Zerko averages 4.9 out of 5 from 14 ratings, while boop. averages 5.0 from 7 ratings.

### Do Zerko or boop. have ads?

boop. shows ads; Zerko does not.

### Which is updated more often, Zerko or boop.?

Zerko ships an update every 3 weeks, and boop. every 3 days. Most recently, Zerko was updated on September 11, 2026 and boop. on June 5, 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.*