This is the 2037th most frequent Russian word.
ios
"Ios" (иос) is not an independent word in Russian and has no definition in standard use. It may refer to a proper noun or abbreviation.
Here, 'iOS' refers to Apple's operating system for its devices, specifically the type of software.
На компьютере установлена система iOS.
There is an iOS system installed on the computer.
In this context, 'iOS' is referred to as a preferred operating system due to user advantages.
Я пользуюсь iOS, так как она удобна и проста.
I use iOS because it is convenient and simple.
'iOS' in this case emphasizes the functionality of the operating system.