The only simulation available in the free version, (a 4-stroke engine), gets out of sync with itself quickly, sucking in fuel during the combustion stroke, expelling exhaust during the intake stroke, etc. Not a useful tool for explaining anything. This is a good concept, but poorly executed. Very disappointing; I will not be paying for the full version.
Useless app Deserve 0. All paid simulations. Uninstalling.
Rubish Not a single free one. You have to pay. Missleading app.
Ok Would be better if you could pick the simulation you start out with.
Not worth it I got this app to help me explain things when I am talking about them. The only thing I got is the four stroke engine model when I downloaded the free app. When I observed it the 4 strokes were not timed with the piston . When I tried to look at other models I have to buy them. With only one example that is not timed correct why would I buy the rest? This app is a good idea just not paying for something I am not impressed with.
Great idea but you have to pay for all the other simulations if u could see at least half then I would give it 5 stars