App Tamer
App Tamer
2.4.6

4.2

App Tamer

App Tamer

2.4.625 June 2019

Efficiently manage your CPU cycles, save energy, and more.

App Tamer
$12.95
25 June 2019

4.2

See all reviews (279)
DownloadPurchase nowMacUpdateInstall with MacUpdate

Downloaded and installed 65,751 times

Category:

Utilities

System

Developer Website:
App Tamer

App Tamer

2.4.625 June 2019

Efficiently manage your CPU cycles, save energy, and more.

Overview

App Tamer tames your processor-monopolizing apps and keeps them from chewing up excessive CPU time and battery life. Powered by a unique AutoStop feature, App Tamer stops each application when you switch away from it -- when you return to that app, it restarts automatically.

App Tamer is built around an attractive and clear user interface, designed for managing all your running applications with minimum distraction or frustration. With helpful displays, you can monitor the average percentage of your processor(s) being used by each app, or access a graphical history or your CPU usage. Easily enable AutoStop for any application, or limit it to a certain amount of CPU time.

Don't waste time trying to manage CPU usage on an app-by-app basis -- liberate your Mac with App Tamer.

What's new in App Tamer

Version 2.4.6:
  • The developer release of macOS 10.15 Catalina is now supported.
  • App Tamer wasn't correctly reporting all Spotlight Indexer activity as a single task. This has been fixed.
  • A new preference allows you to specify how long App Tamer waits after starting up or waking from sleep before it enforces CPU limits.

Requirements for App Tamer

  • OS X 10.8.0 or later

279 Reviews

Rate this app:

17 September 2010

Most helpful

We are so used to Default Folder that we take it for granted that it's the only software that Jon Gotow cares about and will hopefully support for many years to come. Then "App Tamer" - a nifty utility that injects power into our Macs by reducing their consumption appears out of the blue moon and revolutionizes how we use the processing power of our computers. I've tried many utilities that allow me to activate or deactivate the process of my running applications but have always found them clumsy and hard to manage. It's simply unthinkable to go to a menu to stop those superfluous applications from running just to return there a few seconds later because you have forgotten a tiny detail and need to consult the program again. Well, "App Tamer" just does that in a less painful and more intuitive way. Once you launch it for the first time it sits silently in the background and magically turns on and off the processes that are no longer needed. Once you switch to a dormant application let's say by clicking on its window it wakes up like magic without the need for any further intervention. If you use a laptop with no access to a power source you'll appreciate every second of that extra power "App Tamer" has so meticulously accumulated for you and if you are use a computer in office you'll surely benefit from the extra speed that you gain by using applications one at a time and only when they are needed. I can't recommend this application enough. Fariborz AMIRSHAHI - Verona (Italy)
Like (6)
Version 1.0
22 March 2019
Wow, with its own CPU usage reduction in the new version now App Tamer is really perfect!! Thanks so much to the developer!
Like
Version 2.4.4
06 March 2019
New version, old love – since years ! App Tamer is one of my "must have" apps – whenever I see CPU spikes by other apps over a longer time, App Tamer is THE quick solution. Killer app!
Like
Version 2.4.3
03 January 2019
App Tamer is one of my "must have" apps – whenever I see CPU spikes by other apps over a longer time, App Tamer is THE quick solution. I just love it – since years !
Like
Version 2.4.2
14 November 2018
Overall a very good app. But one issue: AppTamer interrupts Chrome when streaming music even if I tell AppTamer not to stop or slow down Chrome. Why? Same with Skype. So I can only stream music or skype when I stop AppTamer?
Like
Version 2.4.1
2 answer(s)
St. Clair Software
03 January 2019
Please see my Aug 13 response below to samallman87's post. Will the whitelisted URL idea fix this for your Chrome use-case? I've explored a number of ideas for Skype, but haven't found a decent solution - App Tamer just doesn't have a way to determine what an app is doing internally, so it can't tell what's desirable network activity and what's just chatter that should be throttled.
Like
St. Clair Software
03 January 2019
Oh sorry - I misread your comment. App Tamer certainly shouldn't be affecting Chrome if you've set it not to slow or stop it. Please update to v2.4.2 and check with that - if it still happens, shoot me an email at support@stclairsoft.com and we'll track down what's going on.
Like (1)
08 October 2018
Simple to operate. Intuitive. Enables you to control how much and for how long an app can control your CPU. This is valuable when you are working on several projects at the same time so that it is far less likely that your Mac gets overwhelmed. Works perfectly under Mojave.
Like
Version 2.4.1
26 September 2018
Like
Version 2.4.1
10 August 2018
It's a good app, but the way it throttles browsers even when youre streaming music is asinine. How it doesn't automatically detect this is beyond me
Like (1)
Version 2.4
2 answer(s)
samallman87
11 August 2018
The app stops updating and hangs on a random percentage after extended periods of use, you have to quit and then reopen to resume real-time updating ?
Like
St. Clair Software
13 August 2018
I'm afraid it's not programmatically practical for App Tamer to know when a browser is streaming music. I'm considering adding a "whitelist" of URLs that would prevent it from slowing or stopping the browser when whitelisted pages are displayed, but that only fixes the issue for some use cases.

Regarding App Tamer getting stuck, as you report in your second post - please contact me at support@stclairsoft.com with details. That certainly shouldn't be happening.
Like
18 July 2018
Awesome update of App Tamer version 2.4 – if every developer would work like St. Clair Software Mac software could be such a pleasure. Thank you very much for these ongoing improvements of an already outstanding Mac software !
Like (1)
Version 2.4
18 July 2018
Update: The developer didn't release a fixed version about the critical bug which I mentioned before (in this app, I don't manage anything, but a lot of processes related to Today Widget are be managed). Poor Developer.
Like
Version 2.4
02 July 2018
I really HATE this developer's Attitude. I found a critical bug (in this app, I don't manage anything, but a lot of processes related to Today Widget are be managed), and the developer admitted it's a bug, and he's fixed it, but he don't want to release an Alpha version, and it PASSED ALMOST 4 MONTHS after he fixed it. The following is his reason; you guys can judge it by yourself. Please note that it PASSED ALMOST 4 MONTHS after he fixed it. --- Releasing a new version requires significant testing to make sure everything in the product works as it should, and being a one-person business, that significantly affects the amount of development work I can get done. So I can't make new releases every time I make a change. --- It PASSED ALMOST 4 MONTHS after he fixed it. It's So Funny. Please judge it by yourself.
Like (2)
Version 2.3.5
$12.95

4.2

Category:

Utilities

System

Developer Website:
DownloadPurchase nowMacUpdateInstall with MacUpdate

Downloaded & Installed 65,751 times

$12.95

4.2

Category:

Utilities

System

Developer Website:
DownloadPurchase nowMacUpdateInstall with MacUpdate

Downloaded & Installed 65,751 times

Don't like new MacUpdate? Back to old design.

279 Reviews

Rate this app:

17 September 2010

Most helpful

We are so used to Default Folder that we take it for granted that it's the only software that Jon Gotow cares about and will hopefully support for many years to come. Then "App Tamer" - a nifty utility that injects power into our Macs by reducing their consumption appears out of the blue moon and revolutionizes how we use the processing power of our computers. I've tried many utilities that allow me to activate or deactivate the process of my running applications but have always found them clumsy and hard to manage. It's simply unthinkable to go to a menu to stop those superfluous applications from running just to return there a few seconds later because you have forgotten a tiny detail and need to consult the program again. Well, "App Tamer" just does that in a less painful and more intuitive way. Once you launch it for the first time it sits silently in the background and magically turns on and off the processes that are no longer needed. Once you switch to a dormant application let's say by clicking on its window it wakes up like magic without the need for any further intervention. If you use a laptop with no access to a power source you'll appreciate every second of that extra power "App Tamer" has so meticulously accumulated for you and if you are use a computer in office you'll surely benefit from the extra speed that you gain by using applications one at a time and only when they are needed. I can't recommend this application enough. Fariborz AMIRSHAHI - Verona (Italy)
Like (6)
Version 1.0
22 March 2019
Wow, with its own CPU usage reduction in the new version now App Tamer is really perfect!! Thanks so much to the developer!
Like
Version 2.4.4
06 March 2019
New version, old love – since years ! App Tamer is one of my "must have" apps – whenever I see CPU spikes by other apps over a longer time, App Tamer is THE quick solution. Killer app!
Like
Version 2.4.3
03 January 2019
App Tamer is one of my "must have" apps – whenever I see CPU spikes by other apps over a longer time, App Tamer is THE quick solution. I just love it – since years !
Like
Version 2.4.2
14 November 2018
Overall a very good app. But one issue: AppTamer interrupts Chrome when streaming music even if I tell AppTamer not to stop or slow down Chrome. Why? Same with Skype. So I can only stream music or skype when I stop AppTamer?
Like
Version 2.4.1
2 answer(s)
St. Clair Software
03 January 2019
Please see my Aug 13 response below to samallman87's post. Will the whitelisted URL idea fix this for your Chrome use-case? I've explored a number of ideas for Skype, but haven't found a decent solution - App Tamer just doesn't have a way to determine what an app is doing internally, so it can't tell what's desirable network activity and what's just chatter that should be throttled.
Like
St. Clair Software
03 January 2019
Oh sorry - I misread your comment. App Tamer certainly shouldn't be affecting Chrome if you've set it not to slow or stop it. Please update to v2.4.2 and check with that - if it still happens, shoot me an email at support@stclairsoft.com and we'll track down what's going on.
Like (1)
08 October 2018
Simple to operate. Intuitive. Enables you to control how much and for how long an app can control your CPU. This is valuable when you are working on several projects at the same time so that it is far less likely that your Mac gets overwhelmed. Works perfectly under Mojave.
Like
Version 2.4.1
26 September 2018
Like
Version 2.4.1
10 August 2018
It's a good app, but the way it throttles browsers even when youre streaming music is asinine. How it doesn't automatically detect this is beyond me
Like (1)
Version 2.4
2 answer(s)
samallman87
11 August 2018
The app stops updating and hangs on a random percentage after extended periods of use, you have to quit and then reopen to resume real-time updating ?
Like
St. Clair Software
13 August 2018
I'm afraid it's not programmatically practical for App Tamer to know when a browser is streaming music. I'm considering adding a "whitelist" of URLs that would prevent it from slowing or stopping the browser when whitelisted pages are displayed, but that only fixes the issue for some use cases.

Regarding App Tamer getting stuck, as you report in your second post - please contact me at support@stclairsoft.com with details. That certainly shouldn't be happening.
Like
18 July 2018
Awesome update of App Tamer version 2.4 – if every developer would work like St. Clair Software Mac software could be such a pleasure. Thank you very much for these ongoing improvements of an already outstanding Mac software !
Like (1)
Version 2.4
18 July 2018
Update: The developer didn't release a fixed version about the critical bug which I mentioned before (in this app, I don't manage anything, but a lot of processes related to Today Widget are be managed). Poor Developer.
Like
Version 2.4
02 July 2018
I really HATE this developer's Attitude. I found a critical bug (in this app, I don't manage anything, but a lot of processes related to Today Widget are be managed), and the developer admitted it's a bug, and he's fixed it, but he don't want to release an Alpha version, and it PASSED ALMOST 4 MONTHS after he fixed it. The following is his reason; you guys can judge it by yourself. Please note that it PASSED ALMOST 4 MONTHS after he fixed it. --- Releasing a new version requires significant testing to make sure everything in the product works as it should, and being a one-person business, that significantly affects the amount of development work I can get done. So I can't make new releases every time I make a change. --- It PASSED ALMOST 4 MONTHS after he fixed it. It's So Funny. Please judge it by yourself.
Like (2)
Version 2.3.5