What is Reddit's opinion of WindTunnel Free?

From 3.5 billion Reddit comments

I am giving you link to a great app where you can test your own design in a virtual wind tunnel. Just draw any object and test it's aerodynamics, lift, drag or CFD analysis like in this picture. Can't recommend enough.

Link: https://play.google.com/store/apps/details?id=com.algorizk.windtunnellite

On Android there is this app called Windtunnel (https://play.google.com/store/apps/details?id=com.algorizk.windtunnellite). I think this is exactly what you're looking for. You can draw whatever shape you want and it will quickly give you a visualization of the flow around it. The free version has only pre defined shapes though which you can play around with. Give it a try and get the full version if that's what you were looking for

There's an app for Android called WindTunnel, and it has this mode where there's just a bunch of teal dots all over the screen, and you can swipe across the screen as if they were like microbeads in oil. It's a fluid simulator too.

Of all the apps on my phone, that one is my niece's favourite.

EDIT: Just checked out the site in OP's link, it's literally the exact same thing as the app I'm talking about, just with a higher resolution of dots. Very cool!

The "torus" mode of this app is pretty much the same:

https://play.google.com/store/apps/details?id=com.algorizk.windtunnellite

But it's not a live wallpaper.