Buki turns paper drawings into private digital sketchpads that still feel like little books. Adults can scan or import artwork, keep the original photo, add titles, dates, notes, tags, favorites, and voice memories, then browse every page together. Artwork saves locally first, children never need accounts, and there is no public gallery. Free includes 1 child, 1 sketchpad, and 20 artworks. Pro adds unlimited collections, private backup, premium organization, and exports.