Which Stephen King Novels Are You Most Likely to Like? A New App Will Tell You

Scribner’s voice-activated app asks users random questions to produce a reading list of the author’s books

It could be the opening to a Stephen King short story: A voice-activated device that sounds suspiciously like “Twilight Zone” narrator Rod Serling asks seven questions and then spits out the names of five or six books written by Mr. King it says will suit your tastes.

At a time when publishers are increasingly concerned about how consumers will discover authors and newly published books, Mr. King’s publisher, Scribner, is betting that a bit of tech wizardry will spark sales of the author’s thrillers, science-fiction and fantasy...