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Macsomnia for Mac

Menu bar app that stops your machine from sleeping — even with the lid closed — with a visible countdown and an auto-off timer.

By iamdadzilla. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Macsomnia at a glance

Version
1.3
Released
26 July 2026
Download size
436 KB
Works on
Apple silicon and Intel
Licence
MIT
Category
Menu Bar and Notch
Developer
iamdadzilla
GitHub stars
3

About Macsomnia

Close your MacBook lid while keeping long jobs alive

Screenshots

Macsomnia screenshot 1

How to install Macsomnia on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Macsomnia and press Get. OpenDMG downloads version 1.3 from iamdadzilla's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Macsomnia show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: Macsomnia-1.3.zip (436 KB).

What is new in Macsomnia 1.3

Bug fix: the menu-bar countdown could freeze (e.g. stuck at 3:11). The label read time as a plain value passed through the App scene, which SwiftUI doesn't re-evaluate when the delegate updates — so it held the launch-time value. The views now observe a Clock object directly and re-render every tick. Also registers the display and safety auto-off timers in .common run-loop mode. Recommended update for all users.

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