iStat Menus

The application places a comprehensive set of system metrics in the macOS menu bar, displaying real‑time information such as CPU and GPU load, memory usage, disk activity, network traffic, temperatures, fan speeds, and battery status. It also includes a weather widget that can show current conditions and detailed forecasts for any location, and a rules engine that can trigger notifications based on thresholds for any of the monitored parameters.

Target users are Mac owners who want continuous visibility into hardware performance, power consumption, and environmental data without opening separate utilities. The tool is suitable for developers, power users, and anyone needing to keep an eye on system health while working.

What distinguishes it is the depth of data presented in a compact menu bar format, extensive customization of display modes and themes, and the ability to define custom alerts. The latest version adds new menu bar layouts, additional sensors for Apple Silicon, gradual fan‑speed control, and expanded weather details while maintaining a low CPU footprint.