Planet Gravity vs SkyLetter

Planet Gravity isn't just about gravity anymore. Select a planet to get a scrolling fact about that planet on the display. This app is a twist on the Newton’s cradle balance balls. The pendulum balls collide just like the real set and you can select other planets to use that planet’s gravity. How does the pendulum swing with different gravity? Even the Sun has gravity - see what it does to the motion of the pendulums (well they'd probably melt but you get the idea.....)

【Deliver your message in the cloud】 "SkyLetter" is an application that draws a message in the sky with contrail. Look up at the sky after entering the message. The airplane which received your message there draws a message with a trail of contrail. Why don't you draw in the sky the names of you, your friends, and the messages you want to convey? You can share it as a video or photo on social media. Let's take a photo that is drawn message and send it to many people. 【Recommended environment】 Support for iOS12.0 or later / iPhone 6S later. If your device is under iOS 12.0, please update and install.