# PythagorasTree vs Harmonograph

The clearest difference is ads: PythagorasTree at none against Harmonograph's shown. PythagorasTree also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Harmonograph's advantage is update cadence (every 10 days vs every 21 months). On price 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.

PythagorasTree ships an update every 21 months, Harmonograph every 10 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PythagorasTree | Harmonograph |
| --- | --- | --- |
| 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 | No |
| Ads | **No** | Yes |
| Update frequency | Every 21 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 3 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Eric Stroh](https://appshunter.io/developer/388351590) | [Takashi Nemoto](https://appshunter.io/developer/6790828928) |

## 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


### Harmonograph

[App page](https://appshunter.io/ios/app/harmonograph-pendulum-art/id6794857269)

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

**In-app purchases:** none


## Frequently asked questions

### Is PythagorasTree free?

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

### Is Harmonograph free?

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

### Do PythagorasTree or Harmonograph have ads?

Harmonograph shows ads; PythagorasTree does not.

### Which is updated more often, PythagorasTree or Harmonograph?

PythagorasTree ships an update every 21 months, and Harmonograph every 10 days. Most recently, PythagorasTree was updated on October 23, 2026 and Harmonograph on October 24, 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.*