I did buy the whole pack of 50...

... and indeed, its all in English! However, all episodes should be download-able so the kids could watch anywhere even if the iPhone is in airplane mode. Surely the developers are aware that five episodes arent enough to keep the kiddies satisfied for a good period of time .
So please make it possible that all episodes can be downoaded at once when bought.
Then all five stars are shaded .

Ms. T2i about Pocoyo Kids TV, v1.3