Ukukhishwa kwe-iOS 11 kuyisiqalo sesiphetho sezinhlelo zokusebenza ezingakathuthukiswa zibe ama-64-bit processors namuhla. I-Apple ibilokhu igcizelela lo mphakathi iminyaka embalwa ukuze izinhlelo zayo zivumelane nalolu hlobo lwabacubungula, kodwa kubonakala sengathi ayifuni nje kuphela ukuthi izinhlelo zokusebenza ze-iOS zihambisane nama-processor angu-64-bit, kodwa manje sekuyithuba labo lokusebenzisa i-iOS. i-macOS ecosystem. Abafana baseCupertino sebeqalile ukuthumela i-imeyili kubathuthukisi bohlelo lokusebenza bebakhumbuza ngesidingo soku thuthukisa izinhlelo zakho zokusebenza zibe yi-64-bit processors, inqobo nje uma zifuna ukuba khona ku-Mac App Store.
Kepha ngaphezu kwalokho i-Apple ishicilele kubhulogi yabathuthukisi izinsuku zokugcina zokuzivumelanisa nezinhlelo zokusebenza. NgoJanuwari 2018, zonke izinhlelo zokusebenza ezintsha ezithunyelwe ku-Mac App Store zizodinga ukunikeza ukwesekwa kwamaphrosesa angu-64-bit. Kusukela ngo-June 2018, zonke izinhlelo zokusebenza ezithunyelwe ku-Mac App Store ukuze zibuyekezwe zizodinga ukuthi zinikwe amandla i-64-bit processor. Esitatimendeni esifanayo, i-Apple incoma ukuthi abathuthukisi abahlinzeka ngezinhlelo zabo zokusebenza ngaphandle kwe-App Store, ukuthi zivumelanise ukuze bakwazi ukuqhubeka nokusebenza enguqulweni elandelayo ye-macOS.
Ngokusho kuka-Apple, I-High Sierra izoba inguqulo yokugcina ezovumela ukusebenzisa izinhlelo zokusebenza ezingama-32-bit ngaphandle kwezinkinga zokuhambisana, Kepha ngokufika kwenguqulo elandelayo ye-macOS, i-Apple ngeke inikeze ukwesekwa kwalolu hlobo lwesicelo, ngakho-ke ukusebenza kwayo kuzoqala ukungazinzi njengoba kunjalo namuhla. Abafana baseCupertino bakhishwe izolo, ngemuva kwezinyanga eziningi zokulinda, i-beta yokuqala ye-macOS High Sierra, inguqulo elandelayo yesistimu yokusebenza yamakhompyutha we-Apple Mac.