Get the model identifier for the current device (on iOS or Mac)

gistfile1.m

#include <sys/types.h>
#include <sys/sysctl.h>

#if TARGET_OS_IPHONE
    char *propertyName = "hw.machine";
#else
    char *propertyName = "hw.model";
#endif

size_t size;

// Mac: use 'hw.model'. On iOS use 'hw.machine'
sysctlbyname(propertyName, NULL, &size, NULL, 0);

char *model = malloc(size);
sysctlbyname(propertyName, model, &size, NULL, 0);

// model identifier as NSString
NSString *modelIdentifier = [NSString stringWithCString:model encoding:NSUTF8StringEncoding];

free(model);