lattice.study — Free AP Study Platform
lattice.study is the best free interactive study platform for AP students. Master AP exams with concept maps, AI-powered FRQ grading, vocab flashcards, historical timelines, interactive maps, and Graphy — your personal AI study assistant. No subscription required to get started.
Courses
Full course coverage from 1200 to present across all 9 units. Features an interactive SPICE-T concept bubble map, historical timeline with 100+ events, animated world map with empire/trade/religion overlays, complete notes, vocab flashcards, AI FRQ grading, MCQ practice questions, 19 historical graph datasets, and Graphy AI assistant.
57 timeline events from 1491 to present across 9 units. BAGPIPE theme filtering. Interactive North America map with era slider, empires, conflicts, alliances, trade routes, and religion overlays. Graphy AI assistant. Notes, vocab, and questions in progress.
Timeline and interactive Europe map covering 1450 to present. Explore view and Graphy AI. Full notes and vocab content in progress.
Interactive world map covering patterns of human activity. Concept explore view. Full content in progress.
Notes, vocab flashcards, and practice questions covering American democracy, institutions, civil rights, and political participation.
4-unit course covering Origins of the African Diaspora, Freedom and Enslavement, The Practice of Freedom, and Movements and Debates. Timeline with 30+ key events from 1619 to present. Concept map, notes, vocab, and practice questions in progress.
Interactive concept maps, graphing calculator (Grapher), step-by-step equation solver, practice problems, and vocab. Content expanding.
Concept maps and practice questions. Content in progress.
Features
- Concept Bubble Map — Visual canvas map of every major AP topic, sized by importance, filtered by theme (SPICE-T / BAGPIPE)
- Historical Timeline — Scrollable, filterable timeline of every major event with unit grouping
- Interactive Map — Leaflet.js map with empires, trade routes, conflicts, religion, and animated era slider
- Vocab Flashcards — Every AP term with definition, status tracking (Still Learning / Got It), cloud progress sync
- FRQ Grading (AI) — Write an FRQ response, get rubric-based AI grading from Graphy explaining every point earned or missed
- MCQ Practice — AP-style multiple choice with instant feedback and explanations
- Graphy AI Assistant — Course-aware AI chat that knows your specific AP curriculum, generates practice questions, explains concepts, and grades FRQs
- Historical Graphs — 19 interactive Chart.js datasets: trade trends, population, empire size, religious spread, and more
- Dashboard — Progress stats, unit completion bars, AP score prediction, and exam countdown
- Grapher & Solver — Graphing calculator and step-by-step equation solver for math courses
Why lattice.study?
lattice.study is completely free to start — no account required to explore. For students who want more, Pro unlocks AI FRQ grading, practice questions, quiz mode, and unlimited course registrations. It was built by an AP student to solve the exact problems they faced: expensive prep services, boring flashcard apps, and no visual way to understand how history connects.
Start studying at lattice.study