# 63 vs Knot Clear

The clearest difference is in-app purchases: Knot Clear at none against 63's 1. Knot Clear also leads on iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. 63 sells 1 one-off in-app purchase. Knot Clear asks for nothing beyond the download.

## The numbers

| Metric | 63 | Knot Clear |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/63-solve63com/id1512891713/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 114 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lalo Mrtnz](https://appshunter.io/developer/1512891712) | [Nebih Basaran](https://appshunter.io/developer/1586973680) |

## What reviewers say

### 63

[App page](https://appshunter.io/ios/app/63-solve63com/id1512891713)

Compete in real-time puzzle races against players globally. Be the first to solve a series of challenges to win. Only a limited number of events are ever available.

**Highlights:** Real-time global events, Competitive puzzle solving, Race against other players, Limited number of unique events, Solve puzzles quickly

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Faster Hint Reveal | $0.99 | one-time |


### Knot Clear

[App page](https://appshunter.io/ios/app/knot-clear/id6502645855)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 63 free?

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

### Is Knot Clear free?

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

### Do 63 or Knot Clear have ads?

Both 63 and Knot Clear show 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.*