Apple Will Start Phasing Out 32-bit Mac Apps From January 2018<img style="float: left; margin-right: 10px"  src="

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With iOS 11, Apple is phasing out support for 32-bit apps and devices completely from iOS. On the macOS side, Apple says that macOS High Sierra will be the last release of the OS to support 32-bit apps.   
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Apple Will Start Phasing Out 32-bit Mac Apps From January 2018