A curiosity engine for learning — built at HackPrinceton Spring 2026.

🏆 Best Education · HackPrinceton Spring 2026 · Won Meta Glasses.

Explore knowledge with FreeFall topic discovery, AI-generated explainers and quizzes, and a care/tend/master retention workflow. Includes a visual knowledge tree, streak tracking, collaborative groups, and opportunity recommendations matched to what you're learning.

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Chess meets Duolingo for investing — an AI-mentored paper trading simulator.

🏆 2nd Place, Track 1 — Consumer Application · AI@Princeton × Trade[XYZ] Hackathon · March 2026 · co-sponsored by Anthropic

Before every trade, Alpha (your AI mentor) pressure-tests your reasoning using Socratic questioning. After every trade, you get a chess-style move rating — brilliant, great, good, inaccuracy, mistake, blunder — based on how well you thought, not just whether the stock went up. 10-level progressive mentor system, multi-asset trading (stocks, ETFs, crypto, options), AI morning brief, and a full XP/streak gamification layer.

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A full-featured Chinese vocabulary app built for Princeton's CHI 108 — because Quizlet wasn't cutting it.

900+ vocab cards across 25 topic decks. SM-2 spaced repetition, handwriting practice with animated stroke order, an AI tutor that grades practice tests (小考, quizzes, essays), configurable quizzes, cloud sync, and six study modes. Single-file React PWA with 238 commits and counting. Free, ad-free, open source.

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A Princeton-specific calendar PWA that turns your course schedule into something actually usable.

Fast course setup, recurring events, drag-to-create, office hours tracking, exam/assignment modals, ICS export, swipe navigation, and Firebase sync. Designed for the way Princeton students actually plan their weeks.

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A math study environment built for active recall — because reading past theorems isn't the same as knowing them.

Paste your lecture notes or textbook LaTeX and Axiom structures them into collapsible definitions, theorems, lemmas, and proofs. Problem sets link back to the relevant section, a flashcard review mode drills every block, and a context-aware AI tutor is one click away. Firebase sync, KaTeX rendering, study streak tracking. Free, ad-free, open source.

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A Pokémon-themed typing race game that makes studying actually fun.

Paste in any lecture passage and race Pokémon opponents that scale to your WPM. Features a full progression system with XP, leveling, and achievements, six playable Pokémon, light/dark mode, race history with WPM charts, and data import/export — all local, no backend.

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