Shouldn't this be しちじ not ななとき? It makes me question if I should even use the app

Shouldn’t this be しちじ not ななとき? It makes me question if I should even use the app.

Automatic furigana can be wrong. It’s supposed to be just an assistance in learning and they tend to transcribe on a character by character basis. I still find them useful but for pronunciation reference either use the audio (most reliable) or double check by selecting the whole phrase, not single characters