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

Gizmo is an AI learning app that turns students' notes, documents and web links into interactive flashcards, adaptive quizzes and gamified challenges.

That game mechanics — streaks, leaderboards, limited lives — can make studying as compulsive as TikTok, turning a student's own notes into quizzes they keep returning to.

$3.5M seed led by NFX, then a $22M Series A led by Shine Capital (announced 2026-04-14) with Ada Ventures, Seek Investments, GSV and NFX.

Founded in 2021 in London by three University of Cambridge graduates — CEO Petros Christodoulou, CTO Robin Jack and CPO Paul Evangelou — who watched study apps fail to hold attention. Their premise: people aren't addicted to phones, they're addicted to progress, novelty and reward, so education should redirect that energy instead of fighting it.

Grew from roughly 300,000 users in 2023 (when TechCrunch last covered it) to more than 13 million across 120+ countries by April 2026, strongest in exam-driven markets such as the UK (GCSE/A-levels) and France. The company ran with just seven employees before the raise, took a $3.5M seed from NFX, and in April 2026 closed a $22M Series A led by Shine Capital to grow engineering and AI teams to about 30 and enter the US college market.

Still scaling: after the April 2026 Series A, Gizmo said it would expand teams in San Francisco and London and push into the US college market, and French students were still citing it by name while revising for the bac in June 2026.

Gizmo made the student's own coursework the product — upload notes or a PDF and AI builds personalized quizzes — instead of competing with content libraries.

It applied proven consumer-game mechanics (streaks, leaderboards, limited lives, friend duels) to studying rather than inventing a new engagement model.

It chose exam-focused markets first (UK GCSE/A-levels, France's bac), where outcomes are measurable and word-of-mouth spreads among students preparing for the same tests.

The 'better screen time' framing reframed the fight with TikTok from losing attention to redirecting it, which made the product easy for students to defend to peers.

Don't fight screen-time habits; borrow their mechanics. Gizmo made studying feel like the games teens already love, with the user's own notes as content so every session is personal.

As of June 2026 Gizmo is scaling: the April 2026 Series A funded a roughly four-fold team expansion (7 to ~30), new offices/roles in San Francisco and London, and entry into the US college market while defending its UK and French exam-season usage. The company reported 13M+ users across 120+ countries in April 2026 and publicly targets one billion learners. User and funding figures are company-reported via press release, echoed by TechCrunch and tech.eu.