chaptra... it's like... goodreads but for ai guided reading. chaptra helps readers understand and enjoy books more deeply. it uses this ai that adapts to their reading progress. so a reader can talk to an ai... and it actually knows which chapter they are on... it explains ideas without spoilers... and highlights key themes in simple language. and authors and publishers can also use chaptra... to engage readers through interactive questions, or context notes, and personalized reading journeys.