# Ech's Fractal — Render Mandelbrot set fractal > Mandelbrot set fractal renderer with customizable depth and colors. (iPhone/iPad app by Tuan Anh Nguyen.) - Source: https://appshunter.io/ios/app/echs-fractal/id1315403987 (this page in markdown: same URL + `.md`) - Developer: [Tuan Anh Nguyen](https://appshunter.io/developer/1176103364) - Category: Entertainment, Education - Price: Free - Rating: 3.70/5 from 6 App Store ratings · 4 written reviews indexed - Age rating: 9+ - Requires: iOS 15.6 · 36 MB - Languages: American English - Released: 2018-01-07 - Data updated: 2026-08-29 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/echs-fractal/id1315403987/reviews.md ## What is Ech's Fractal? Features - Customizable depth up to 5000 - Customizable colors ## Key features - Customizable depth up to 5000 - Customizable colors - Mandelbrot set rendering - High detail exploration ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/echs-fractal/id1315403987/reviews.md ### 5/5 — Nice *2020-06-04* I like it **Developer response:** Thank you for rating! ### 4/5 — Quality *2020-05-02* I would like to ask a few questions. 1) How are you generating the fractal? Is it generating from an image or a formula? 2) Why is the quality so bad after a high zoom factor? 3) Is the quality decreasing because of the floating point numbers reach a limit? If you would take a few minutes out of your time to awnser these questions, I would be happier to know why these problems occur. **Developer response:** Thank you for your question. :) 1) I generated the image from the formula. You can reference from the wiki page below. https://en.m.wikipedia.org/wiki/Mandelbrot_set 2) 3) You got the point. To the higher zoom, it need to calculate the value at smaller scale of number that need more precision. At the limit of calculation ability of the device (phone), the rendered image will be broken. (In academy, they use the super computer to generate more precise fractal image) Thank you for enjoying the app! ### 4/5 — . *2019-02-24* nice but has significant flaw: you can zoom in and pan, but can't zoom out, you can only reset to the full image. **Developer response:** Thank you for your comment. What gesture will you suggest for the zoom out action? : ) ### 2/5 — Two good points, more bad *2018-06-05* Let’s start with the two good points: First, this is the only Mandelbrot set generator I found for the iPad which allows you the the iteration threshold. In other words, you can make your own choice between accuracy and speed. Second, the author gives you a fair amount of control over the colors, so you can customize to your liking. Many other programs offer very limited color control. The not-so-good, however, really hurts this application. The author sacrifices some screen space for a line of advertisement, which is downright rude for an application which can create beautiful images. The advertisement line just wrecks the picture. Another problem is the user interface. You zoom and pan using the familiar finger pinch and finger draw methods. That’s a poor fit for this application because it is very difficult to figure out what you’re going to end up with. This is particularly aggravating when using a relatively high iteration count, because of long delays involved in making the calculations. A better approach, used by other Mandelbrot set generators is to use a “rubber Band” rectangle around the zoom area. That way you can see exactly where you’re zooming. Some included help would also be...helpful, particularly concerning the color options. Users who are not familiar with the Mandelbrot set may also appreciate some explanation of the iterations (depth) and how this will affect image quality and speed. **Developer response:** Thank you for the comment. I will consider to make this app more user-friendly in the future version. : ) ## Frequently asked questions about Ech's Fractal ### What is Ech's Fractal? Ech's Fractal is an application designed to render the Mandelbrot set fractal. It offers users the ability to customize the depth of the fractal and its color schemes. ### What devices does Ech's Fractal support? Ech's Fractal is available for iPhone, iPad, and iPod touch devices. ### Is Ech's Fractal free to use? Yes, Ech's Fractal is available for free and does not require any payment to download or use its features. ### What is the maximum fractal depth in Ech's Fractal? Ech's Fractal allows for a customizable depth of up to 5000, enabling highly detailed fractal rendering. ### Does Ech's Fractal have ads? No, Ech's Fractal does not contain advertisements, providing an uninterrupted user experience. ### What is the age rating for Ech's Fractal? Ech's Fractal has an age rating of 4+, making it suitable for a wide range of users. ### How often is Ech's Fractal updated? The latest version of Ech's Fractal is 1.4, which was last updated on February 25, 2025. Updates are released periodically to improve the application. ### What is the user rating for Ech's Fractal? Ech's Fractal has an average rating of 3.7 stars based on 6 user ratings. ## Version history (last 5 releases) ### 1.5 — 2026-08-25 - Improved performance and rendering quality. - Added 2× and 4× image export for sharper, higher-resolution results. - Increased the zoom limit, allowing you to explore finer details. Please note that deeper zoom levels and larger exports may require additional processing time. - Added an optional Support / Tip feature for anyone who would like to support the app’s continued development. It is entirely voluntary and does not affect access to any features. Thank you for using and supporting the app! ### 1.4 — 2025-02-25 Updated to ensure compatibility with the newest iOS. ### 1.3 — 2020-06-10 - Enhance the interface - Enhance the palette-list, new-palette, catalog screens - Select the palette from main screen - Get and share palette from/to palette library - View/share the fractal image on web-page ### 1.2 — 2020-05-16 - Enhance the interface - Support dark mode - Stop rotating the screen automatically - Add the rotating, zooming-out function ### 1.1 — 2018-07-30 - Change gestures of moving and zooming ## More apps by Tuan Anh Nguyen - [FreeDOF](https://appshunter.io/ios/app/freedof/id1260284528) - [Meta Minesweeper](https://appshunter.io/ios/app/meta-minesweeper/id1601031059) - [Ech's Photo Finder](https://appshunter.io/ios/app/echs-photo-finder/id6743335610) All apps by Tuan Anh Nguyen: https://appshunter.io/developer/1176103364 ## Related topics [nguyen anh tuan](https://appshunter.io/ios/topics/nguyen-anh-tuan) · [fractal animation](https://appshunter.io/ios/topics/fractal-animation) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*