Suspension is a physic simulation of particles dispersed in a fluid.

It benefits from a simulation engine similar to the one of the "Wind tunnel Pro app", able to render a very realsitic fluid in real time.

The code is highly optimized to allow a large number of particles to be simulated : it uses the NEON vector instructions of the CPU, and when present, both cores of the CPU. Therefore, it runs best on iPhone 4S and iPad2. It also runs on older hardware (starting from 3GS), but with a lower number of particles.

Tap the bottom right text in the menu bar to cycle between three touch-actions:
-Move fluid
-Draw walls
-Insert Propellers

You can choose between 5 different color themes. In themes 1 through 3, color is dependent on fluid speed, in theme 4 it depends on fluid orientation.

Reset simulation and walls/propellers by double-tapping with two fingers.
Shuffle particles with a one-finger double-tap.
Hide/show menu bar with a double tap near the bar.
Use left/right arrows to undo/redo your drawings of walls and propellers.

Ratings and Reviews

4.6 out of 5
88 Ratings

88 Ratings

Elis wet oh ,


All five stars because it’s by far the best particles game I have ever played and I really want it again but I accidentally deleted it and I never realized until I wanted to play it but it not updated for ios11

Acerbico ,


This is a beautiful, beautiful app. I could stare at it for ages. I love to see how structures (reminiscent of jet streams or hurricanes) will form in the flows, as an unpredictable consequence of the placement of a couple of walls and propellors. And then to see the structure disrupted by turbulence a moment later. Just lovely.

Y hello there:) it's me! ,


If you ever have free time then this app is absolutely perfect! Very time consuming as you come up with a limitless amount of patterns and ideas to play with in this "game".


456.9 KB

Requires iOS 3.2 or later. Compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5S, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPad, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation), iPod touch (6th generation), and iPod touch (7th generation).



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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