Jcakery是一家位于美国硅谷的技术公司，从事智能手机和平板电脑的创新电池解决方案，Jcakery app由nicedesign负责UX/UI设计。

Upon launching the app, you're immediately greeted with the Monitor screen. It shows you the remaining percentage of energy stored in your battery, the remaining time estimated before your device runs out of charge, and when the battery level will drop below 50 percent and 20 percent. It will also give you an estimate of what time to charge your iPhone again.