iStat Menus is an advanced system monitor for your menu bar, letting you check the vital stats of your Mac at a glance. It covers a huge range of stats, including a CPU monitor, GPU, memory, network usage, disk usage, disk activity, temperature monitoring, fan sensors, power sensors, date & time, battery and more. All in a highly optimised, low resource package. iStat Menus is highly configurable, with full support for macOS’ light and dark menu bar modes.
Sounds good? Well, it looks good, too.
iStat Menus key features
CPU & GPU
Realtime CPU graphs and a list of the top 5 CPU resource hogs. Tracked use by individual cores or with all cores combined, to save space. Plus, GPU memory and processor usage on supported Macs, and the active GPU can be shown in the menubar.
Memory stats for your menubar as a pie chart, graph, percentage, bar or any combination of those things. Opening the menu shows a list of the apps using the most memory.
A realtime graph to keep on top of what’s being sent and received for all network connections, including a bandwidth breakdown for the top 5 apps.
Disk usage & activity
See used and free space for multiple disks in your menubar. Plus, S.M.A.R.T. status monitoring, detailed disk I/O, and a variety of different read and write indicators.
A realtime view of temperatures, hard drive temperatures (where supported), fans, voltages, current and power. Fan speeds can be controlled, with different rules when on battery power, if you’d like.
Date & time
A highly configurable date, time and calendar for your menubar, including fuzzy clock, moon phase, and upcoming calendar events. Plus, a world clock with sunrise, sunset, moonrise and moonset times for over 120,000 cities.