A function I use to update version string on the layout.

VersionString.m

@implementation VersionStringDemo
 
- (void)updateVersionLabel
{
    NSString* version =
        [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
    NSString* build =
        [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleVersionKey];
    NSString* versionString = [NSString stringWithFormat:@"Version: %@ Build: %@", version, build];

    [_versionLabel setText:versionString];
}

@end