Prevent your Mac from going to sleep

Lungo is a macOS app that prevents your Mac from falling asleep and your screen from dimming.

Older versions

(These builds will not run on newer macOS versions)

Frequently Asked Questions

I have a feature request, bug report, or some feedback

Send it here.

Where can I find the changelog?

Go here and click “Version History”.

Does it work when the lid is closed?

No, that’s not allowed for apps on the App Store, for good reasons. Imagine you activate it while your computer is doing a heavy task and then put the laptop in your bag. Your laptop could easily overheat.

However, if you really want this, there are some solutions here.

Does Lungo keep my Mac awake even if there is a scheduled sleep?

If you have set a sleep schedule in “System Preferences › Battery › Schedule”, it will take priority over Lungo. This is out of Lungo‘s control.

Can I left-click the icon to toggle it like with Caffeine?

Yes, choose “Activate on Left-click” in the preferences.

Can you localize the app into my language?

I don’t have any immediate plans to localize the app.

How is it different from Amphetamine?

Amphetamine has lots of features. Most of which I would never use. It ships with a myriad of menu bar icons to choose from, but none that looks good. With Lungo, I wanted a focused and simple app with great defaults.


You can control Lungo using anything that supports opening a URL with a custom scheme.

For example, to activate Lungo for 10 minutes, run this terminal command:

$ open -g 'lungo:activate?minutes=10'


  • activate
  • deactivate
  • toggle

The activate and toggle commands support the parameters hours and minutes, which can be used together or individually. If you don’t specify a duration, it will use the default duration you have set in Lungo.



# Deactivate Lungo
$ open -g 'lungo:deactivate'

# Activate Lungo for 1 hours and 30 minutes
$ open -g 'lungo:activate?hours=1&minutes=30'

# Activate Lungo for 1 hours and 30 minutes (Alternative)
$ open -g 'lungo:activate?hours=1.5'

# Toggle Lungo with the default duration
$ open -g 'lungo:toggle'

# Toggle Lungo for 10 minutes
$ open -g 'lungo:toggle?minutes=10'
import {execFileSync} from 'node:child_process';

execFileSync('open', ['--background', 'lungo:toggle']);
import Cocoa

let command = "lungo:toggle"

let configuration = NSWorkspace.OpenConfiguration()
configuration.activates = false command)!, configuration: configuration)
do shell script "open --background 'lungo:toggle'"
import subprocess['open', '--background', 'lungo:toggle'])

Check out my newsletter to follow updates to this app and other things I'm working on.