PythagorasTree vs Ech's Fractal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PythagorasTree
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.
- Recursive fractal generation
- Adjustable triangle angles
- Customizable tree colors
- Interactive growth and shrink animation
- Visualizes Pythagorean theorem
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The Pythagoras Tree is math art. A square trunk is drawn. The hypotenuse of a right triangle is laid on top of the square. From the two legs two new squares are drawn. This process is repeated recursively until there the size of the square is too small to draw. Here you can adjust the angles of the triangle and the color of the tree. You can also make the tree grow and shrink to see the steps in making the tree.
Ech's Fractal
Explore intricate fractal patterns with customizable depth and color palettes. This application allows users to render the Mandelbrot set with high detail.
- Customizable depth up to 5000
- Customizable colors
- Mandelbrot set rendering
- High detail exploration
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Features - Customizable depth up to 5000 - Customizable colors
Screenshots
Verdict
The clearest difference is rating: PythagorasTree at 5.0 against Ech's Fractal's 3.7. PythagorasTree also leads on review sentiment (100% vs 75%) and iOS requirement (13.0 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PythagorasTree holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 6 respectively. Written reviews point the same way: 100% of PythagorasTree's written reviews are positive against 75% of Ech's Fractal's.
PythagorasTree ships an update every 21 months, Ech's Fractal every 18 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | PythagorasTree | Ech's Fractal |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 3.7 (6 ratings) |
| Positive reviews | 100.0% of reviews — better | 75.0% of reviews |
| Number of ratings | 3 | 6 — better |
| Update frequency | Every 21 months | Every 18 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 36 MB |
| Age rating | 4+ | 9+ |
| Developer | Eric Stroh | Tuan Anh Nguyen |
Customer experience
PythagorasTree
Ech's Fractal
In-app purchases
PythagorasTree
No in-app purchases
Ech's Fractal
No in-app purchases
Questions
Is PythagorasTree free?
Is Ech's Fractal free?
Which has better reviews, PythagorasTree or Ech's Fractal?
Do PythagorasTree or Ech's Fractal have ads?
Which is updated more often, PythagorasTree or Ech's Fractal?
Other comparisons
