SixtyFour
SixtyFour
1.7.4

4.6

SixtyFour free download for Mac

SixtyFour

1.7.4
27 August 2016

Boost your old Mac's performance.

Overview

SixtyFour facilitates the setting of a preference to force a 64-bit app to open in 32-bit mode. Forcing a 64-bit app to open in 32-bit mode reduces its memory usage significantly. Running most if not all apps in 32-bit mode on systems that have little memory available can potentially lead to an increase in overall system performance. That means you can keep your Mac running longer, but running better.

If you intend to run more apps at the same time, and, at the same time, maintain system performance, but can't upgrade to the newer, faster Macs with more RAM, this is the app for you!

Features
  • Quick Look plug-in: Quick Look displays extra info: app architectures, app platform info and bundle version
  • Single Volume Scanning: scanning a volume finds all apps even unregistered apps
  • SixtyFour Agent: it's a standalone app, which displays the bit mode of an application when launched
  • Performance Tools: the latest version of ProcessTimer is included along with other tools

What's new in SixtyFour

Version 1.7.4:

Note: Now requires OS X 10.7 or later.

Changes
  • New icon drawing code
  • Open with menu changes
  • Services menu changes
  • Updated ProcessTimer

27 SixtyFour Reviews

See all

Rate this app:

Stickman67
26 October 2011

Most helpful

I read through much of the feedback on this app with interest, and then did a bit of research. That tended to back up the developer's suggestions that running apps in 64-bit mode did use extra memory. I then went and changed those of my most frequently used apps to 32-bit mode, just to see what happened. Memory usage has been lowered significantly. Other than that, not much to report about performance, one way or the other, except … Photoshop CS5 is much snappier on the startup in 32-bit mode. Why? Who knows? Who cares? It now uses less memory and starts faster. Downside for this developer is that I did this using Get Info and clicking "Run in 32-bit mode" for those apps that offered the option – took me all of a few minutes – so I'm not going to part with my cash. That's not to say, however, that others might well find this app beneficial, in terms of time savings, or just because they're not 100% sure of what they're doing otherwise. I'm not saying to buy it or not. What I am saying is that the process it is designed to carry out has been of benefit to me, even if I didn't use this app to carry out that process. [MacBook Pro 2.53 Intel Core Duo, 4 GB RAM, OS X 10.7.2]
Like (5)
Version 1.0.3
Stevencee
25 January 2016
I downloaded this from the email I received from MacUpdate, but when I opened it, I was told it won't work with Snow Leopard, despite the email telling me it would! Then I went to the 64 website, and it also said it will work with Snow Leopard, on the FAQ page! "SixtyFour is compatible with any G5-based PowerPC or 64-bit-capable Intel hardware running OS X Leopard, Snow Leopard, Lion, Mountain Lion or Mavericks." But on this page on MacUpdate, it now says the current version needs 10.7, however it said see links for earlier versions. that would work with Snow Leopard. Well the version shown is the same one it says only works with 10.7, 1.7.3, which does NOT work with Snow Leopard! So come on, can you not keep your versions straight? If there is a version for Snow Leopard where is it???
Like (1)
Version 1.7.3
4 answer(s)
1951fdg
1951fdg
25 January 2016
Please download SixtyFour from the homepage (it will automatically detect your OS version):
http://getsixtyfour.com/

Direct link:
http://getsixtyfour.com/SixtyFour%201.0%20(snow%20leopard).zip
Like (1)
Stevencee
Stevencee
26 January 2016
Thanks for the link. I opened the app, and see the window with all the apps, but there's little info as to what to do from there. How do I make them open in 32 bit? If just check it do I have to close each app and open it again to take affect? Are all the apps shown safe to downgrade, as some are System & Core apps. And how do you get the "Quick Look" function to work, your screenshot only shows it in use, not how to create the little window opening.
I would think a simple one-page of instructions might be something you should consider doing, as it's frustrating having no idea what's what, or how to do anything.
Oh, and do I have to individually select each app I want to open in 32 bit?
Like (1)
J-Mueller-MacUpdate
J-Mueller-MacUpdate
26 January 2016
That's the same link as what MacUpdate uses for the Snow Leopard version.
Like
1951fdg
1951fdg
27 January 2016
You are welcome. Just check the app, if the app to be opened is already running, quit it and launch it again or use the Open action under the File menu of SixtyFour. Most of the apps shown are safe to "downgrade". Some apps are automatically blacklisted and not shown. The "Quick Look" function can be used in Finder or in SixtyFour when an app is selected. Yes, you have to individually select each app you want to open in 32 bit. Regarding instructions, please visit our homepage, where you will find Docs and FAQs. The FAQs section is definitely worth reading! Remember that you can always contact us. Contact info can be retrieved on our homepage at the top right hand corner, a red mail icon button.
Like
Wile-E-
01 January 2016
Initially I was interested in giving this a look until on first launch it tried to connect to download.trusteer.com. What is that about? Trying to go to the Developer's website presents one of my serious peeves - blocking viewing the website unless you click through something else to get there. Disappointing tactics in my mind and enough for me to simply trash this.
Like
Version 1.7.2
3 answer(s)
1951fdg
1951fdg
02 January 2016
SixtyFour has been around since 2011! Enough said! SixtyFour does not connect to download.trusteer.com! It should not! Do you have proof of this? Please contact us, much appreciated!
Like
Wile-E-
Wile-E-
02 January 2016
Whether it has been around for a day or five years is not really relevant to my comment. I would be happy to send you the information I have if you want to provide me with an email address. I did not click through the first popover, not sure what else to call it, in order to get to the main part of your site so I have no idea what your contact info is. I never click through things like that.
Like
1951fdg
1951fdg
02 January 2016
It is not called a popover, it is called a modal overlay. I have updated the main part of my site and removed the modal overlay. Contact info can be retrieved at the top right hand corner, a red mail icon button.
Like
Dhess01
05 June 2015
A good way to selectively enable 32bit mode for apps w/out using the Info pane. The developer helped me work out an issue when I encountered an Apple bug by setting the MAS in 32bit mode. Very responsive and thorough communication.
Like
Version 1.5.0
Wts
18 April 2015
You are better off to max the RAM of any computer rather then waste money on some nonsense software trickery. Some programmes simply do not work well in 32 bit only because they were not programmed to run in 32 bit.
Like (1)
Version 1.5.0
2 answer(s)
1951fdg
1951fdg
18 April 2015
Yes, it is better to increase or max the RAM of your Mac. But what if you can't for systems limited to 3Gb or 4Gb due to chipset, defective memory slot/s or lack of money?

Most apps that are 32-bit-capable work without any problems in 32-bit mode. Developers who decided to only program for 64-bit should only release the app as a 64-bit app. It's as simple as that.
Like (4)
Cartoonasaur
Cartoonasaur
31 December 2015
My iMac is maxed out at TWO gigs. It is always in a ram-starved state... This app is very useful to people like me...
Like (1)
GeogProf
29 January 2015
$5 for something that’s already built into OS X?

You don’t need this to switch 32-bit-capable apps from 64- to 32-bit mode — just open each app’s Get Info dialog and click the “Open in 32-bit mode” checkbox, and voilà.
Like (4)
Version 1.4.0
2 answer(s)
1951fdg
1951fdg
16 April 2015
SixtyFour does a whole lot more than just, well, switch 32-bit-capable apps from 64- to 32-bit mode. SixtyFour is a system utility, it shows the current bit status next to each app, making it easy to manage 32-bit-capable apps. SixtyFour includes a Quick Look plug-in which extends Quick Look’s standard functionality to display extra info: app architectures, app platform info and bundle version. SixtyFour also includes SixtyFour Agent, a standalone app within SixtyFour, which displays the bit mode of an app when launched. None of the above mentioned features are already built into OS X.

SixtyFour also includes ProcessTimer: A simple, but effective process viewer and CPU/MEM monitor. ProcessTimer, which shares functionality similar to Activity Monitor, has some features which are completely absent in Activity Monitor.

In my humble opinion, SixtyFour is a very complete app, with some interesting extra features.
Like (2)
Libertyforall1776
Libertyforall1776
18 June 2015
System Profiler and Activity Monitor will BOTH show you what 32/64 bit apps you have and which are running currently, respectively. This app should be free, it is not worth buying.
Like
Anthony-Angelo
14 January 2015
I got SixtyFour when it first came out over two years ago. It really helped my 2006 iMac have a second life. What I thought was a failing computer, was just one that couldn't handle as much memory as some of the 64 bit programs were taking up. Many of those programs were able to drop to 32 bit and left the system with a lot more working memory. Recommend!
Like (1)
Version 1.3
3 answer(s)
umaromc
umaromc
29 January 2015
Might I ask how much RAM you have?
Like
Anthony-Angelo
Anthony-Angelo
29 January 2015
My iMac is maxed out at 3GB.
Like
Cartoonasaur
Cartoonasaur
31 December 2015
My white iMac is MAXED at a paltry 2 GIGs...

This app is a godsend...
Like (1)
Ittai
05 October 2014
Great simple UI, easy to use, save more ram on my old mac. Good value. Fast support for my question.
Like
Version 1.2.0
PepperDogSoft
03 October 2014
Not the best UI, but does what it says. Saves memory on older devices.
Like
Version 1.2.0
Randychev
01 October 2014
I was trying the demo today and don't find Mail, Safari, or other such programs that I seem to have open all the time, thus being great candidates for 32 bit operation. Is it possible that Mt Lion doesn't have a 32 bit version of these programs available to run?
Like
Version 1.2.0
2 answer(s)
1951fdg
1951fdg
01 October 2014
Try the Quick Look plug-in. It will display the app architectures. If it does not display both "i386" and "x86_64" under "Intel" it is 64-bit only. It is possible that some apps are 64-bit only, especially under Mountain Lion.
Like
Randychev
Randychev
01 October 2014
This is indeed the case. Few of my "always open" apps have i386 capability. Thanks for the insight into the Quick Look info.
Like
Weasel
27 January 2014
I recently had trouble with v 1.1.0 on my G5. It bounced in the dock & crashed. The developer found the problem & advised me on what to do. Problem gone!!!
Like
Version 1.1.0
$4.99

4.6

App requirements: 
  • Intel 64
  • Mac OS X 10.7.0 or later
Category: 
Developer Website: 
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