- Prevent Display sleep
- Prevent System sleep
- Prevent System sleep when lid is closed
- Prevent Disk idle
- Flexible settings and convenient triggers
- One click activation (Optional)
- Activate at login
- Activate when AC power ON
- Activation when connected to a specific Wi-Fi network
- Timeout settings
- Critical battery charge settings
- Manually screensaver, sleep, fade
- Silent Mode
- Apple Script Support

What’s New

Version 2.13

- Minor improvements

Ratings and Reviews

4.5 out of 5
1.1K Ratings

1.1K Ratings

slippman ,

I miss caffeine. i can’t use this

i was stunned to find caffeine missing when i received my new imac and i downloaded antiSleep. now, everytime i wake my iMac, all my usb memory drives have their connections broken, and any applications tied to them crash. i futzed with its click down menu, but i can’t seem to tune it to stop causing my external memory devices from disconnecting such that the system is warning me that i am not closing them down correctly. this isn’t something i can sit down to four or five times a day. sorry. so, in my experience, the software is broken and unusable and i guess i’ll either have to pay for one or crack open the sdk and write one myself. but i will say, since 677 users find no problems with it, either i am missing something obvious, or i am the only one that keeps necessary data for an application on a usb link. worse, if the data on the disk were to be corrupted by this, i would be up the creek. so it isn’t even safe for me to use this software. maybe i set it up wrong, but i can’t seem to figure it out from the menu, and i’ve been using software since the early 1980s, and i don’t have the patience to contact them and work through it for what is really something they introduced in replacing caffeine. i don’t like slamming coders, because i was once one, and i’m sure they’re good people. they must be. they are not writing for microsoft :-)

Developer Response ,

I sincerely regret that the application did not like you. Try the new version, it is much more stable and has more powerful functionality, including work with external devices. If you need additional features, please write to me at

devinhedge ,

Logical successor to Caffeine

I loved Caffeine. It was elegant. It was simple. Alas, it became unmaintained.

This app is the logical successor. I like it enough to give it 4 stars. I didn’t give it 5 stars because it is overly complicated and as a result the User Experience can be a little confusing. Example: Anti-Sleep System vs. Anti-Sleep Display: My hypothesis is that most users will likely not care about the difference, or even make a differentiation in thier minds eye. Instead most users will think about on and off, is my computer on or off. As a result, having switches for system vs. display doesn’t really give me a good feel for what behavior is expected. Part of the challenge is that Macos doesn’t give users a great way to just “lock the screen” when they walk away, like is possible on Windows. It is, gasp, a Macos design flaw. Yes, I can hit Shft+Cmd+Q to lock the screen, but then what is the system behavior? The answer is nebulous beyond the fact that the screen is locked.

Dfom ,

This app doesn’t work…on any of my 3 Macs

The only function I need this app to do right is to keep my Macs from going to sleep. The app fails to perform this very basic function on 3 separate Macs. I’ve been trying unsuccessfully to get it to work for over 6 months, on 3 different vintages of Macs; old to new, with different OS versions. I played along with several updates, thinking maybe they finally got it to work? The app installs and opens without issue, and offers a dizzying array of options to supposedly control its behavior, but it just doesn’t work. To pour salt in the wound, recent updates try to de-activate the already non-functional functions, trying to force an update to the “Pro” version. I really miss Caffeine. Its simple interface always worked as intended. The publishers of Anti-Sleep should focus on making their app work, period, rather than bloating it with features that few customers need. I really don’t appreciate the Photoshop complexity, I just need the app to keep my Macs from going to sleep. This app is a great big, bloated FAIL.

Developer Response ,

Describe your case more detail to my email, and I will definitely try to help you in solving your problem.


Lyashenko Pavel
1.5 MB

OS X 10.11 or later, 64-bit processor



Age Rating
Rated 4+
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