Socion
A matching app for dating, friendship and networking where you choose the intertype dynamic you want, not an algorithm. Nearly 300 members across all 16 types, with 460+ connections made.
I build things that explain how people work.
I’m Spencer Stern, founder of Keniri, based in London. I spent nine years studying how people behave at scale, as a product and experimentation analyst at Reach plc, and two decades studying how they relate one to one. Keniri is my full-time work.
Keniri Live since October 2026
A voice conversation that helps you understand yourself and the people you care about. You talk out loud for about fifteen minutes, with nothing to prepare and no right answers, and get a plain-language report on how you think, what you need, and why some relationships come easily while others take work. Free to start.
Try KeniriAlso running
Socionics Insight
The free reference behind the books: 372 pages on the 16 types, the 8 cognitive functions and all 16 intertype relations.
Your Social World Explained
The book that started it all, now in its second edition. Read a free sample chapter, or find it in Kindle, paperback, hardcover or audiobook.
Background
Product & experimentation
Nine years at Reach plc, the last four reading A/B tests across 65+ news sites and turning the results into go, iterate or stop decisions. The same discipline now runs Keniri.
Track record and case studiesSocionics Made Simple
A personality framework about how the 16 types interact, not just who they are. 17 books in all, plus a free plain-language guide to every type.
Browse the booksParked
Side projects I’ve paused while Keniri has my full attention. Both are still online, but I’m not working on them.
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ATS Defence Paused
A tower defence game where you play the applicant tracking system, built as an experimentation stack in miniature with a pre-registered A/B test.
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ChatBotCV Paused
Turns a CV into a chatbot that recruiters can question, instead of skimming a static PDF.