Gizmo bets gamified AI flashcards can beat TikTok for teens; 13M users, $22M Series A

Gizmo is a London-founded AI learning platform that turns a student's notes, documents and web links into interactive flashcards, adaptive quizzes and gamified challenges. Founded in 2021 by three University of Cambridge graduates — Petros Christodoulou (CEO), Robin Jack (CTO) and Paul Evangelou (CPO) — it started from the observation that study apps lose to TikTok and YouTube, and that education should fight for better screen time rather than less.

The core bet was that the engagement mechanics of consumer tech — streaks, leaderboards, limited daily lives, friend challenges — could make studying compulsive. Users upload their own material and the AI builds personalized quizzes in seconds, so the app works everywhere and never depends on a content catalog. Growth followed: about 300,000 users when TechCrunch first covered it in 2023, then more than 13 million users across 120+ countries by April 2026, concentrated in exam-driven markets like the UK and France.

The April 2026 $22M Series A, led by Shine Capital with Ada Ventures, Seek Investments, GSV and NFX, valued the growth and funded expansion: the company planned to grow from seven employees to around 30, split teams between San Francisco and London, and attack the US college market, which CEO Christodoulou called very different from the exam-focused markets where Gizmo had already won. Investor Shine Capital credited 'organic, student-driven engagement at massive scale' as what had eluded consumer learning.

Figures on users, funding and team size come from Gizmo's April 2026 announcement and TechCrunch's reporting of it. As of June 2026 the app was still a name students cited in mainstream coverage of AI revision tools, and Gizmo's stated long-term goal was one billion learners.