Everything you need to study effectively
Six powerful tools in one platform. No sign-up required, no paywalls, and all your data stays on your device.
Test yourself with adaptive questions
StudyDeck offers four question types — multiple choice, true/false, short answer, and calculation — each available at easy, medium, and hard difficulty levels. Get instant feedback after every answer so you know exactly where you stand.
- Four question types to match every learning style
- Three difficulty levels per question
- Instant feedback with detailed explanations
- Configurable quiz sessions by chapter and type
Flip, rate, and remember
Every flashcard is scheduled using the SM-2 spaced repetition algorithm. Cards you struggle with appear more frequently, while cards you know well fade into longer review intervals. You spend your time where it matters most.
- SM-2 algorithm calculates your optimal review schedule
- Rate each card to fine-tune future intervals
- 3D card flip with front/back content
- Per-chapter due counts on your dashboard
Study together in real time
Share a room code and quiz with classmates in real time. Co-Quiz uses peer-to-peer WebRTC connections, so your data stays between you and your study partners. No accounts, no sign-ups, no servers in the middle.
- Peer-to-peer connections — no data on our servers
- Real-time score tracking and leaderboard
- Built-in text and voice chat
- Works across devices with just a room code
Know your weak spots
Your mastery is tracked by topic and chapter, not just by overall score. Score trends show how you are improving over time. See exactly where to focus your next study session instead of guessing.
- Mastery percentages by chapter and question type
- Score history with trend visualization
- Export your full progress as a JSON file
- Import progress to continue on another device
Slides and textbooks, right here
View lecture slides, textbook chapters, and assignments without leaving StudyDeck. The built-in PDF viewer lets you study content and take quizzes in the same tab, so you never lose context switching between apps.
- Built-in PDF viewer with page navigation
- Organized by chapter and content type
- No downloads required — view directly in-app
- Quick access from the subject dashboard
Learn from your mistakes
Review Mode shows every question you got wrong, organized by chapter. See your original answer alongside the correct one, with full explanations. Turn mistakes into learning opportunities instead of repeated failures.
- All incorrect answers organized by chapter
- Side-by-side comparison of your answer vs. correct answer
- Full explanations for every question
- Clear individual or all incorrect answers when ready
Ready to start studying?
Pick a subject and start learning. No sign-up needed.