Zehn is the Group's reading app. Honest, well-paced fifteen-minute summaries of important non-fiction — paired with a chatbot that knows the book and will argue with you about it.
The Group is, by an order of magnitude, the least obvious investor in a literary app. We came to it because the founder's daughter complained that the existing summary apps either lied about the book or stretched a thirty-page idea over a hundred and twenty bullet points. Zehn now has over 110 titles and a working chatbot trained on each.
Browse 110+ editorially curated titles, organised by argument. New titles weekly. No bestseller lists, no top-ten round-ups.
Each summary written by a commissioned editor and structured as a single argument with three or four supporting moves. Read or listen.
A chatbot trained on the book's full text and the principal counter-arguments. Ask it questions. Disagree. It will push back, in writing, on the spot.
On things that gain from disorder.
A man, his city, and the price of getting things built.
Why grand plans so often fail.
Zehn is in private testing through 2026. Tell us your name and the last book you read; we will write back when an invitation is available.