Yes, Gravity Zen is completely free and it doesn't have any in-app purchases or subscriptions.
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Gravity Zen is free.
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5 out of 5
3 ratings in United Kingdom
What I want for one thing is being able to remove objects so like you can remove the star or black hole thing in the middle so you can just have a bunch of mini planets just not having anything to orbit around and then you can make bigger objects and then you can add it in later and make an orbit and so you can do binary orbits!
The Raffi is just so cool I mean gravity
