NoSleep is an application that you use to prevent your Mac from going to sleep.

To address the negative reviewer comments:

1) The purpose of NoSleep is primarily to keep the Mac awake so you can read the screen while not otherwise actively using the Mac.

2) It is not a menubar app. It is a regular app that appears in the Dock.

3) It is not meant to prevent a laptop from going to sleep if the cover is closed (which is not advisable even if it did.)

Visit our website for other information and a demo.

This app was conceived for musicians who use their Macs to read music as they play their instrument and consequently do not want their Mac to go to sleep.

What can NoSleep do for me?

It keeps your Mac awake for a given period of time. NoSleep updates system activity periodically as soon as it launches, until it is quit, or the battery charge level drops below a specified amount (which defaults to 10%)

As soon as you launch NoSleep it prevents your Mac from sleeping until quit, or the battery charge level drops below a specified amount . You can schedule the time it quits so that you can leave it unattended. Do this in Preferences.

Preferences Window:

Use the Preference pane to specify quit time.

Also use the text field on the preferences window for creating a timer to quit the app at a time you can specify as a (fractional) number of minutes. The timer is created as soon as editing stops in the text field, say by tabbing out of it, and each edit resets the timer. If the value of the text field is zero no such timer is created, and any previous such timer will be removed.

Finally, in preferences you can specify a battery threshold so that NoSleep stops keeping the Mac awake at a certain level. This helps prevent the Mac from running out of energy when unplugged.

What’s New

Version 1.1

Updated to support 64-bit.

Ratings and Reviews

1.0 out of 5
2 Ratings
2 Ratings
Phearbot ,

Poor app

Didn't work at all for me when I shut the lid. For anyone here because Life Hacker recommended it, this is a different app than the one they recommended. Google for No Sleep Helper, you can find the dmg out there and it works like Life Hacker said. I would imagine someone there also posted a link to the dmg.

This app wouldn't be too bad if it worked when you shut the lid. But there's also no quick toggle. NoSleepHelper has an easy toggle button up by your sound/network preferences in the top right.

Theginger77 ,


I downloaded this app after reading a recommendation on LifeHacker. The first time I tried it, it did stay awake while the lid was closed, but when I opened the lid, the computer went to sleep! I was really excited about the concept of this app, but it lost me within the first minute of use. Awful.

JimmyFiat ,

Not exactly what I need except of 31 second jobs

Installed on MBA and it does work fully in clamshell mode, but only for 31 seconds. Have to open and close it after 31 seconds to use it again with cover closed - for 31 more seconds. Fix this and I will love it.


Limit Point Software
662.1 KB

OS X 10.6.6 or later, 64-bit processor



Age Rating
Rated 4+
Copyright © 2011-2018 Limit Point LLC


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