Macs in Chemistry

Insanely Great Science

Getting ready for Catalina


Whilst there are many sites that track the compatibility on common desktop applications, it is often difficult to find out information about scientific applications. Based on the number of page views on the lists for Mojave, High Sierra, Sierra, El Capitan, Yosemite it is apparently a useful resource.

I'll start compiling a list over the weekend but I thought I'd mention a couple of things. One of the key features is that 32-bit applications will no longer be supported, Apple has a page describing the reasons for moving to 64-bit.

Apple's transition to 64-bit technology is now complete. Starting with macOS Catalina, 32-bit apps are no longer compatible with macOS. If you have a 32-bit app, please check with the app developer for a 64-bit version.

The easiest way to check for 32-bit apps is to click on the Apple icon (top left of screen) and select "About this Mac", then click the system report button. Then select "Applications" and details of 32/64-bit are in the rightmost column.


When you attempt to open a 32-bit app, you will see an alert that the app is not optimized for your Mac, or that the developer needs to update it to work with this version of macOS. There may also be drivers that need to be updated.

Techrader has also been tracking installation problems.

As ever feel free to send me any information on scientific applications under Catalina and add them to the list.

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