Haru App is a must-have utility for pro and amateur astronomers. It includes detailed weather information for plan observations. More features and handy funcionalities for amateur astronomers are comming, stay tuned. We also have a Haru iOS app, you can find it here: https://itunes.apple.com/cn/app/id1270663271?mt=8 * Acknowledges to Shanghai Astronomy Observatory for providing the 7Timer! API (http://www.astron.ac.cn). ** Haru(晴、はる) means clear day in Japanese.