# PythagorasTree vs Happy Patterns

The clearest difference is in-app purchases: PythagorasTree at none against Happy Patterns's 4. PythagorasTree also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). Happy Patterns's advantage is update cadence (fortnightly vs every 21 months). On price and ads there is nothing between them.

Both are free to download. Happy Patterns sells 4 one-off in-app purchases. PythagorasTree asks for nothing beyond the download.

PythagorasTree ships an update every 21 months, Happy Patterns fortnightly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PythagorasTree | Happy Patterns |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pythagorastree/id421785224/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 3 MB | 30 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Eric Stroh](https://appshunter.io/developer/388351590) | [SHASHANK S TOMAR](https://appshunter.io/developer/6772878453) |

## What reviewers say

### PythagorasTree

[App page](https://appshunter.io/ios/app/pythagorastree/id421785224)

Explore the visual beauty of mathematical concepts with this app. It generates fractal art based on the Pythagorean theorem, allowing you to customize angles and colors. Watch the intricate patterns grow and shrink to understand the recursive process.

**Highlights:** Recursive fractal generation, Adjustable triangle angles, Customizable tree colors, Interactive growth and shrink animation, Visualizes Pythagorean theorem

**Features:** macOS Compatibility

**In-app purchases:** none


### Happy Patterns

[App page](https://appshunter.io/ios/app/happy-patterns/id6779627492)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Attractors | $3.99 | one-time |
| Mandalas | $3.99 | one-time |
| Bloom | $3.99 | one-time |
| Launch Collection | $7.99 | one-time |


## Frequently asked questions

### Is PythagorasTree free?

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

### Is Happy Patterns free?

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

### Do PythagorasTree or Happy Patterns have ads?

Neither PythagorasTree nor Happy Patterns shows ads.

### Which is updated more often, PythagorasTree or Happy Patterns?

PythagorasTree ships an update every 21 months, and Happy Patterns fortnightly. Most recently, PythagorasTree was updated on November 6, 2026 and Happy Patterns on November 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.*