I am going to buy tickets on line. Do I need to purchase the audio ? I read somewhere they have a free app you can get
but is it in English ?
The app is in English and has various guided tours. It's free. I don't think there's any need to purchase a separate audio guide unless you really want to spend a long time in the museum and see a lot more than what's covered in the app.
Yes, the App comes in many languages. Rental audio devices are 5€.
wwww. rijksmuseum.nl