As of the latest iOS TestFlight (3.5.0 572):
Standing Orders: Day/Week/2 Weeks/4 Weeks/Monthly/Quarterly/Yearly
Pots: Day/Week/2 Weeks/4 Weeks/Monthly/Quarterly/Yearly
Subscriptions: Day/Week/2 Weeks/4 Weeks/Monthly/Quarterly/Yearly
We now have the same options on all three schedules - and brings it mostly inline with Android (with the exception of their subscriptions having x days/weeks/months/years configurable)