YouTube provides automatic translation (even) if there is no explicit subtitling from the producer. You turn it on easily with a few clicks. And the quality is surprisingly good – and getting better all the time thanks to machine learning.
On the iPad
When selecting the language, please make sure that you use already manually edited subtitles as source material for the translation. In this case, the Spanish subtitling is provided by the producers. Logically, this gives (even) better results in translation than from the machine-read original English language.