MacSystemMonitor Beta 0.1

Highlights

• Live menu bar values for CPU, RAM, disk and power consumption (watts), updated every 2 seconds. You choose which ones to show.
• Flexible RAM display: percentage, used, used / total, or available.
• History window with charts for CPU, RAM, power and disk over 1 hour, 24 hours, 7 days, 30 days, 1 year or everything. Drag across a chart to zoom in, and hover to see exact values.
• Sleep tracking: see when your Mac slept, for how long, how much energy it used (Wh), and the average per hour.
• Small storage footprint: the last 7 days are kept in full detail, then older data is condensed automatically. A full year takes about 5 MB. You can choose how long history is kept.
• Private: all data stays on your Mac, and the app makes no network connections.

Requirements

• macOS 27 or later
• Power values need a Mac that reports its power consumption, which includes current Apple silicon Macs and desktops like the Mac mini. On other Macs the power value shows "Not available" and everything else works.

Installation

1. Download SystemInfo-0.1.dmg below.
2. Open it and drag SystemInfo onto Applications.
3. Launch it. It appears in the menu bar, not the Dock.

First launch: this beta is not signed with a paid Apple Developer ID, so macOS will show a warning. Open System Settings → Privacy & Security, scroll down, and click Open Anyway next to "SystemInfo was b do this once.

A ZIP (SystemInfo-0.1.zip) is also provided as an alternative download.

Known limitations

• Beta software, so expect some rough edges.
• Sleep energy is calculated for sleeps of at least 15 minut after waking.