Since the beginning of the month, Apple no longer accepts applications that are not created at least for 64-bit devices. Many developers have already updated their applications, but there are still many that are not updated (and we will see if they do). The point is that if we use 32-bit applications on a device and on a 64-bit system, the performance could be affected, which is why since iOS 10 we will start see a notice when we try to install one application that has not been updated for 64-bit processors.
Apple started asking for support for 64-bit processors in any new application or update that was delivered to the App Store now a year ago, in June 2015, which means that if we see the notice we will be using an application delivered before that. date. If we see the notice, we have to take into account two things: the first is that probably only tested up to iOS 8, and the second is what the warning shows, that the overall performance of the system could be impaired (according to Apple).
The iOS 10 notice means the app was delivered before June 2015
The good news is that, unless iOS 10 breaks compatibility (which is possible), the applications will continue to work and to enter them we will only have to accept a message, which is not a serious problem, but it is somewhat annoying. It is not known if this notice will make developers update their applications including support for 64-bit processors, but surely some end up doing so, especially if users give them a star in the App Store because of the message.
64-bit software is already used much more than 32-bit on computers and it seems like a matter of time before the same thing happens on mobile devices.
