Bonk your brain into shape.
The 100% free, 100% private study platform. Flashcards with spaced repetition, practice quizzes, a focus timer, Duolingo-style XP and streaks, and a local AI tutor that runs entirely inside your browser. No sign-up. No ads. No tracking. Ever.
A complete study toolkit — every piece free
Flashcards with spaced repetition, explained quizzes, a focus timer, XP and streaks, and a private local AI tutor. Built for how students actually study.
Smart Flashcards
Flip, learn, repeat. Built-in decks for every topic, spaced repetition, and an instant importer that turns PDFs, notes or URLs into flashcards — on your device.
Instant Quizzes
Thousands of practice questions with instant feedback and explanations, not just a score at the end.
Focus Timer
A pomodoro timer with a mascot that celebrates every session you finish. Getting started is the hardest bonk.
Local AI Tutor
A tiny-but-smart AI that runs in your browser — flashcard generation, quiz building, homework explanations. No API, no account, no data leaving your device.
XP, Streaks & Quests
Duolingo-style motivation: earn XP, keep streaks alive, finish daily quests and level up from Bonk Novice to Bonk Legend.
Radical Privacy
No sign-up, no cookies, no trackers, no data collection. Everything is saved locally in your browser — always.
How StudyBonk works
Three steps, zero accounts. Everything happens on your device and saves right in your browser.
Pick a topic
Choose from free guides covering math, biology, chemistry, physics, history, SAT prep and study skills — or jump straight into flashcards and quizzes.
Study with bonks
Flip flashcards, answer quizzes with instant explanations, and run focus sessions. Every rep earns XP and feeds your streak.
Level up
Finish daily quests, keep your streak alive, unlock badges and climb from Bonk Novice to Bonk Legend. Progress saves locally — automatically.
Pick your subject, we'll bring the bonks
Deep guides, matching flashcard decks and explained quizzes — organized into topic clusters so you always know what to study next.
Math
Free math guides, flashcard decks and practice quizzes for algebra, geometry, trig and more.
Biology
Free biology guides, flashcard decks and practice quizzes for cells, DNA, genetics, body systems and ecosystems.
Chemistry
Free chemistry guides, flashcard decks and practice quizzes for atomic structure, the periodic table, bonding, reactions, moles and pH.
Physics
Free physics guides, flashcard decks and practice quizzes for motion, energy, waves, electricity, magnetism and light.
History
Free history guides, flashcard decks and practice quizzes for ancient civilizations through the Cold War and civil rights.
SAT Prep
Free digital SAT study guides, flashcard decks and practice quizzes for reading, writing, math and vocabulary.
Study Skills
Free, evidence-based study skills guides: focus, memory, note-taking and exam confidence, with decks and quizzes.
Studying that feels like a game (because it is one)
Motivation is the missing feature in most study tools. StudyBonk borrows the psychology that makes language apps sticky and aims it at your actual syllabus.
XP for everything
Every card, correct answer and focus session earns XP — with a 2× Daily Boost to kick off your day.
Streaks with freezes
Study daily to build your streak. Miss a day? A streak freeze (max 2) has your back.
Daily quests
Three fresh quests every day plus a weekly 500 XP challenge keep sessions focused.
Badges & levels
Fifteen achievements and eleven levels from Bonk Novice to Bonk Legend.
Bonk Challenges
Timed speed rounds for when you want to turn practice into a boss fight.
Dark mode built in
Study at 2am without searing your retinas. One tap toggles light/dark.
Meet Bonk AI — tiny, smart, and it never phones home
Most "AI study apps" ship your questions to a server. Bonk AI runs a distilled, quantized language model (1–2B parameters) directly in your browser using WebGPU — no API, no account, no data leaving your device. Instant Mode works on any hardware with zero download.
Flashcard generator
Type a topic, get a deck. Saved locally, ready to drill.
Quiz generator
Auto-built practice sets with an answer key.
Homework explainer
Structured breakdowns: definition, steps, example, self-check.
Meme mode
Study help with the correct amount of brainrot. Responsibly dosed.
Productivity coach
Pomodoro plans, anti-procrastination scripts, energy management.
Zero telemetry
Your chats live in local storage on your device. One click clears them forever.
StudyBonk vs the typical study app
Everything is free here — so what's the catch? There isn't one. That's the whole point.
StudyBonk
100% free · 100% private
Free forever
- ✓ Flashcards + spaced repetition
- ✓ Quizzes with explanations
- ✓ Gamification (XP, streaks, quests)
- ✓ Local AI tutor, no API
- ✓ No account needed
- ✓ No ads or trackers, ever
- ✓ Open-source code
Typical study app
freemium · ad-supported
"Free"*
- ~ Flashcards + spaced repetition — Limited on free plan
- ~ Quizzes with explanations — Premium feature
- ~ Gamification (XP, streaks, quests) — Partially paywalled
- ✗ Local AI tutor, no API
- ✗ No account needed
- ✗ No ads or trackers, ever
- ✗ Open-source code
Fair comparisons with specific apps: StudyBonk vs Quizlet · vs Anki · vs Kahoot
No accounts. No tracking. Open-source.
Every promise on this page is verifiable — see the proof or read the code.
Zero data collection
StudyBonk has no accounts, no analytics, no cookies and no server-side storage. Your notes, decks and streaks live only in your browser's local storage on your own device.
Open-source transparency
The entire platform is open-source on GitHub. You can read every line of code — including this page — before you trust it with a single minute of study time.
A named, accountable author
Every page is written and maintained by TuffyCoder, an ethical developer who publishes under a real identity with public social channels and a responsible disclosure policy.
Questions students actually ask
Is StudyBonk really 100% free?
How is StudyBonk private if it has no accounts?
Where is my progress saved?
Does the Bonk AI send my questions to a server?
Can I use StudyBonk offline?
Is StudyBonk open source?
Ready to bonk your brain into shape?
No sign-up. No ads. No tracking. Your progress saves automatically in your browser — start in the next ten seconds.