Jcakery是一家位于美國硅谷的技術公司，從事智能手機和平板電腦的創新電池解決方案，Jcakery app由nicedesign負責UX/UI設計。

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.