Apple has made a switch from 32bit apps to 64bit apps and if the apps aren’t updated they won’t work in iOS 11 at all. If user is using some of his favorite apps and in case they aren’t updated, he might suffer because he won’t be using them under the new update.

To see if certain app would work in iOS 11 or not, Apple has provided users with a handy tool. This tool shows user which of the apps in his or her mobile phone would work in updated iOS 11.

In order to use this tool go to settings > general > about > applications. A list of apps installed in user phone will appear.

Apple has been asking developers to switch to 64bit apps from the last few years and there are fair chances that all the apps would work.