Built a reading app, rough around the edges, would love feedback

Kept starting classics, never finished them. Forgot characters, lost track of the story, gave up on old English words. So I just built something.

Shows you one sentence at a time. Recaps what happened before each chapter. Defines words you tap. Plays background sound and a lot more

Has Animal Farm, Jekyll and Hyde, a few others. Still rough, just me making this.

Any feedback would be much appreciated!