Older iOS applications were built on a 32-bit file architecture. Newer apps are designed for a 64-bit file system architecture. Apple is doing away with support for the older 32-bit applications. So, how does this affect you? Lets take a look at it.
32-bit vs. 64-bit Architecture
I am not going into all the gritty details of computer architectures. The Readers Digest version is just this. Older computer processors and their support chip sets were designed on a 32-bit architecture. So, the software (Apps) that ran on them were designed to match the current processors architecture. The 64-bit architecture is faster, more efficient, can do more things, yada, yada, yada. Apple is moving its iOS devices to a 64-bit architecture. It is also moving it’s apps to the 64-bit architecture. Apple has accommodated older 32-bit apps during this transition. However, they are now giving notice that 32-bit apps will be fazed out in the future. When you boot up a 32-bit app in iOS now it gives you a warning that the app needs to be updated soon or it will not work. Here is the Tweetbot app on my iPad Pro:
Finding 32-bit Apps
If you do not like surprises would like to find the 32-bit apps on your iOS device then do the following. Go into the Settings area and then into General:
Once in the General area tap on About:
Now, just scroll down and tap on Applications:
The next screen shows you your 32-bit apps. In my case it is the Flashlight and Woodworking Calculators apps:
Just know that these apps, if not updated, will fail to work in the near future. Maybe you could bug the developers to update to a 64-bit version. I understand that updating an app from 32-bit to 64-bit is not difficult, but then again I am not a Developer.
Apple is moving it’s iOS to an exclusively 64-bit architecture. It might not be a bad idea to check your apps to see if you are going to experience any problems.