# Pixel Sphere 3D vs Knotwork Puzzle

The clearest difference is update cadence: Knotwork Puzzle at daily against Pixel Sphere 3D's every 2 months. Pixel Sphere 3D's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Pixel Sphere 3D sells 1 one-off in-app purchase and Knotwork Puzzle sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Pixel Sphere 3D ships an update every 2 months, Knotwork Puzzle daily. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Pixel Sphere 3D | Knotwork Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/pixel-sphere-3d-art-puzzle/id1580326319/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 152 MB | 26 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UNIT5](https://appshunter.io/developer/1095195747) | [Emre Buyukegribey](https://appshunter.io/developer/1545814018) |

## What reviewers say

### Pixel Sphere 3D

[App page](https://appshunter.io/ios/app/pixel-sphere-3d-art-puzzle/id1580326319)

This brain training game challenges you to rotate 3D blocks to reveal hidden pixel art images. Enjoy a relaxing experience with no time limits or penalties, and play offline.

**Highlights:** Rotate 3D blocks to reveal pixel art, Offline play supported, No time limits or penalties, Hint system available, Supports multiple languages

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pixel Sphere 3D No Ads | $2.99 | one-time |


### Knotwork Puzzle

[App page](https://appshunter.io/ios/app/knotwork-puzzle-loop-lines/id6789190248)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Pixel Sphere 3D free?

Pixel Sphere 3D is free to download, with in-app purchases available.

### Is Knotwork Puzzle free?

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

### Do Pixel Sphere 3D or Knotwork Puzzle have ads?

Both Pixel Sphere 3D and Knotwork Puzzle show ads.

### Which is updated more often, Pixel Sphere 3D or Knotwork Puzzle?

Pixel Sphere 3D ships an update every 2 months, and Knotwork Puzzle daily. Most recently, Pixel Sphere 3D was updated on October 21, 2026 and Knotwork Puzzle on October 15, 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.*