I don't agree with the OP, AI assisted reading is the future, especially when you're trying to read a tome like War and Peace and don't know all the Napoleonic references or thst the Russian aristocracy spoke French and tried to emulate the French, or why that matters a lot to the plot and your perception of them.

Good job, OP. I wanted to build this myself.

Do you have plans for android and iOS support and syncing across devices?