Getting started is one thing, completing a product is another. It's not an uncommon metric to apply a 1.5x or 2x multiplier to the development time of an iOS app to obtain the time to develop the Android one.
I would also argue that from the same starting point (no java experience and no Swift experience) the learning curve is way smoother on iOS, with more fine tuned APIs and better tools (interface builder can be picked up easily by a designer with no coding background).
