I found a solution and answered on another question.
SSKeychain: accounts not stored in iCloud? - see below
Does iCloud Keychain work? Will it be synchronized with my other iDevices?
Yes, if Settings > iCloud > Keychainenabled
How long will it take before my items ship to iCloud?
It seems like a moment.
Is there a way that notifies me if new passwords have reached my device?
No.
SSKeychain . SSKeychainQuery synchronizationMode SSKeychainQuerySynchronizationModeYes
NSError *error;
[SSKeychain setAccessibilityType:self.keychainAccessibilityType];
SSKeychainQuery *query = [[SSKeychainQuery alloc] init];
query.service = service;
query.account = account;
query.password = password;
query.synchronizationMode = SSKeychainQuerySynchronizationModeYes;
[query save:&error];
if (error) {
NSLog(@"Error writing credentials %@", [error description]);
}
SSKeychain SSKeychainQuerySynchronizationModeAny, iCloud.
, , Keychain iCloud enabled ( > iCloud > Keychain). Keychain Sharing .