No sound – Gravity - Light Particles Manipulation App Review

There's no sound! Also, the free version of this app repeatedly interrupted to play full screen ads, but did not offer an option to purchase the $0.99 in-app purchase to get rid of the ads -- available per the App Store write-up. The full version actually cost $1.99 -- necessary because the ads were so disruptive -- but it doesn't have sound. Frustrating.
Review by doubleagentsuperspy on Gravity - Light Particles Manipulation App.