Engaging game, but learning seems incidental, lacks depth.
Unpredictable physics make a cute game harder than it looks.
Clever update to popular app, but now with in-app purchases.
Beautiful astronomy resource is rich with information.
Mobile planetarium brings night sky up close, beautifully.
Impressive tool for stargazing, learning about astronomy.
Sequel introduces new levels that have gravitational pull.
Cute water puzzler where you fight fires with physics.