RamBar

A tiny macOS menu bar app for RAM usage + system wattage.

Tested Platform

• Tested only on: macOS 26.3 (Build 25D125)
• Tested on Apple Silicon
• Wattage source: macmon

Features

• Menu bar readout:
  • watts (W) on the left
  • RAM usage bar in the center
  • RAM usage percent on the right
• Dropdown menu:
  • Force Refresh
  • Open mac mon in Terminal
  • Start on Startup toggle with checkmark
  • live RAM: used/total line
  • Settings section with refresh interval checkmarks:
    • 1, 3, 5, 10, 30, 60 second refresh
  • Non-system RAM Limit section with checkmarked choices:
    • 75%, 85%, 90%, 95%
  • selecting a non-system limit also triggers a terminal command hook
  • selected non-system limit command is re-sent every 15 minutes while app is running
  • Close RamBar
• Default refresh interval: 10 seconds
• Selected refresh interval is persisted
• Runs as a normal app (no Terminal window required)

Easy Install (Drag to Applications)

1. Download RamBar-Installer.dmg from the latest GitHub release.
2. Open the DMG.
3. Drag RamBar.app into Applications.
4. Launch RamBar from Applications or Launchpad.

Release page: https://github.com/daffi-vibecoding/rambar/releases

Build Installer Locally

./scripts/make_installer.sh

Outputs:

• dist/RamBar-Installer.dmg
• dist/build/RamBar.app

Runtime Footprint (Estimated)

Measured on macOS 26.3 over a 45-second sample window.

• CPU average: ~0.19%
• CPU max observed spike: ~6.8%
• RAM (RSS) average: ~47 MB
• RAM observed range: ~24 MB to ~48 MB

Values vary by hardware and refresh interval.

Attribution

• Uses macmon for power metrics.
• Vibe-coded in Codex in about 30 minutes.