# Minimal Binary Clock vs Knock Knock

The clearest difference is device support: Minimal Binary Clock at 3 against Knock Knock's 1. Minimal Binary Clock also leads on iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Minimal Binary Clock | Knock Knock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Daily |
| Size | 32 MB | 22 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Juon Kawakami](https://appshunter.io/developer/1759914202) | [Viraat Das](https://appshunter.io/developer/1239103283) |

## What reviewers say

### Minimal Binary Clock

[App page](https://appshunter.io/ios/app/minimal-binary-clock/id6758262885)

**Features:** macOS Compatibility

**In-app purchases:** none


### Knock Knock

[App page](https://appshunter.io/ios/app/knock-knock-5-minute-dates/id6774902208)

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

**In-app purchases:** none


## Frequently asked questions

### Is Minimal Binary Clock free?

Minimal Binary Clock is free to download, with no in-app purchases.

### Is Knock Knock free?

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

### Do Minimal Binary Clock or Knock Knock have ads?

Neither Minimal Binary Clock nor Knock Knock shows ads.

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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.*