WattMate sits in the Mac menu bar and shows which app is draining the battery right now, in watts, and how many minutes you get back if you quit it. 2 minutes after you quit, it measures again and prints what really changed. Apple silicon, macOS 14+.
痛点：Mac 用户不知道到底是哪个 App 在偷偷耗电，只能笼统看到电量下降，无法量化关掉某个 App 能省回多少续航。
目标用户：Apple Silicon Mac 笔记本重度用户、经常外出办公或续航焦虑的开发者/设计师。
证据：WattMate sits in the Mac menu bar and shows which app is draining the battery right now, in watts, and how many minutes you get back if you quit it. 2 minutes after you quit, it measures again and prints what really changed.
变现：一次性买断（如 $5–12）或订阅制；也可做 Pro 版解锁历史耗电记录、多设备同步、耗电排行导出。
MVP：用 MenuBarExtra + powermetrics/IOKit 读取每进程功耗，菜单栏实时显示 Top 耗电 App 及瓦数，选中 App 提供“退出并测量前后功率差”的一键对比，输出节省分钟数估算。
竞品：iStat Menus、Stats、coconutBattery、Activity Monitor（系统自带）、Battery Health
摘要：WattMate 是一款 Mac 菜单栏 App，实时以瓦特显示哪个应用最耗电，并在退出 2 分钟后重新测量，告诉你实际省回了多少分钟续航，支持 Apple Silicon 与 macOS 14+。它切中了 Mac 用户的续航焦虑痛点，但该 Product Hunt 帖子 0 票、无任何付费意愿或收入数据，且 iStat Menus、Stats 等竞品已相当成熟。属于真实但竞争激烈、付费意愿未经验证的小众工具方向。