Yes, but the furigana helps you read, so you are able to recognize the kanji later on. 
And then the furigana would disappear later in the book, and only the kanji would remain. 
It helped strengthen the reader. 

Satosora

alter_native

Use of Gen-AI to aid reading 

cryotosensei

I guess if these kids aren’t interested n motivated to learn English in the first place, the app could act as a hook to get them to read more n gradually develop a love of reading.

I’m thinking about my own experience with Japanese. Sometimes I read books meant for primary school kids because the furigana was indicated alongside the kanji. It made for a more frictionless experience 