# Buzzer Knockout vs ZenGrid Puzzle

The clearest difference is in-app purchases: ZenGrid Puzzle at none against Buzzer Knockout's 5. ZenGrid Puzzle also leads on ads (none vs shown) and update cadence (daily vs every 8 days). On price and device support there is nothing between them.

Both are free to download. Buzzer Knockout sells 5 one-off in-app purchases. ZenGrid Puzzle asks for nothing beyond the download.

Buzzer Knockout ships an update every 8 days, ZenGrid Puzzle daily. Both last shipped on October 13, 2026.

## The numbers

| Metric | Buzzer Knockout | ZenGrid Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 days | **Daily** |
| Size | 25 MB | 33 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stavros Petropoulos](https://appshunter.io/developer/1895016415) | [Omer Faruk Demirci](https://appshunter.io/developer/6806554064) |

## What reviewers say

### Buzzer Knockout

[App page](https://appshunter.io/ios/app/buzzer-knockout/id6773007504)

**Features:** Apple Watch app, iMessage stickers

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Sparks | $0.99 | one-time |
| 500 Sparks | $2.99 | one-time |
| 1,200 Sparks | $3.99 | one-time |
| Premium Pass | $8.99 | one-time |
| 3,000 Sparks | $8.99 | one-time |


### ZenGrid Puzzle

[App page](https://appshunter.io/ios/app/zengrid-puzzle/id6808602796)

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

**In-app purchases:** none


## Frequently asked questions

### Is Buzzer Knockout free?

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

### Is ZenGrid Puzzle free?

ZenGrid Puzzle is free to download, with no in-app purchases.

### Do Buzzer Knockout or ZenGrid Puzzle have ads?

Buzzer Knockout shows ads; ZenGrid Puzzle does not.

### Which is updated more often, Buzzer Knockout or ZenGrid Puzzle?

Buzzer Knockout ships an update every 8 days, and ZenGrid Puzzle daily. Most recently, Buzzer Knockout was updated on October 13, 2026 and ZenGrid Puzzle 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.*