MandelSplit64

Johannes Gajdosik

About this app

This is exactly the same as my MandelSplit app, but optimized for 64bit ARM including double precision NEON.

In short:
LONG PRESS to bring up the settings dialog.
TAP to prioritize calculation. (This comes in handy when you want to see a certain part of the image without waiting for the entire calculation to be finished. Try it. TAP again.)

No ads. No permissions. Free software.

Why are there 2 apps? So that you can install both and compare the speed difference. By doing so you will learn part of the advantage of your 64bit phone compared to a 32bit model. There are other advantages of 64bit devices, but this app only shows you the speed gain. It is a kind of benchmark that shows you how fast your device can be if properly programmed.

Performance gain on my device (yours could be different): at lowest precision 2 times (NEON), at medium precision perhaps 1.5 times, at higher precision again 2 times (64bit)

When you want to measure by yourself: draw the same image in both apps and observe the value iter/sec, which tells you how many iterations your device can compute in one second for the given precision. Because the app does also other things beside calculating iterations (like drawing) the iter/sec value is lower when the image is simple and there is not much computing.

Ratings and reviews

Works for a bit then crashes every time on my Galaxy S9. Seems to crash while zooming in or out, otherwise the best Mandelbrot app I've used and fast! I have the 32-bit version as well which doesn't crash. Would be nice if this app had the ability to save a screen shot. The Samsung gesture for capturing the screen doesn't work with this app.

This a great app. But I find it pretty difficult to use because it can not lock in to a specific point. It needs an option to go to a specific point at a specific zoom level and lock on to it so that the centre does not move around when we are zooming in or out. The author is clearly a great programmer for achieving such smooth mandelbrot zoom.... This feature should be trivial to implement.

Great fractal generator. It allows rotation and zoom of the Mandelbrot set. The number of max iterations is insane. Slow rendering / crashes are entirely dependent on the hardware capabilities of your device and how far you push the app. The only thing I wish it had is an option to save or export the rendered image.

What’s new

0.1.14:
+ Fix: no longpress with more than 1 fingers
+ Experimental: Quit dialog gets 3rd button for popping up the menu