A plan
Timeline, milestones, and what to learn first.
Arc builds it from what you're studying, then revises it as the conversation evolves.
Your personal tutor
Plan your study.
Follow your plan.
Actually understand.
Arc is your personal tutor. Tell it what you're studying — it builds a plan, writes notes, creates flashcards and quizzes, and keeps everything in one place.
Arc — Organic Chemistry
Can you make the quiz a bit harder?
Updated the quiz — 8 questions now mix mechanism and stereochemistry. Flashcards on chair conformations too.
12 flashcards updated
The problem
No more tab-switching.
No more losing your flow.
✕
You ask ChatGPT a question, then copy the answer into a doc.
Arc keeps everything in the session. Notes live right next to the chat.
✕
You lose your train of thought switching between your notes app and the AI.
One dashboard. Everything updates in the same conversation.
✕
You take a quiz and have no idea what you missed.
Arc grades free-response answers and explains where you went wrong.
Why Arc
Built for focus, not fragmentation.
5
Study aids
plan · notes · flashcards · quizzes · key points
1
Dashboard
every aid tied to the same conversation
0
Distractions
no tabs. no doc-switching. no copy-paste.
What Arc gives you
Five study aids.
One conversation.
Each one updates as the conversation evolves. Ask for more depth, a different angle, or a harder quiz — Arc just makes a new one.
Notes
Condensed summaries that evolve with the conversation.
Ask for more depth or a different angle — Arc rewrites in place.
Flashcards
Active recall without the setup.
Flip, swipe, repeat. Ask for harder cards and Arc generates them instantly.
Quizzes
Multiple choice and free-response.
Type your answer naturally — Arc grades it with an explanation if you missed.
Key points
The essentials to master.
Pulled from everything Arc has taught you, ready for exam day.
Quiz — Organic Chemistry
Question 3 of 8
Explain why an SN2 reaction inverts stereochemistry at the carbon centre.
The nucleophile attacks from the back, so the bonds invert like an umbrella flipping in the wind…
Correct. Good analogy. The Walden inversion occurs because the nucleophile must approach 180° to the leaving group — backside attack inverts all three substituents.
Quizzes that actually teach
Type your answer.
Arc grades it.
Quizzes aren't just multiple choice. You can naturally type answers, and Arc will grade them for you — with a full explanation if you went wrong.
Free-response grading
Write what you know. Arc reads it and tells you how close you got.
Explanations, not just verdicts
When you miss, Arc explains the gap — not just the answer.
Harder on demand
Ask for a harder quiz mid-session. Arc regenerates instantly.
Beyond the tools
A study environment,
not just a chat.
Arc adapts to how you actually focus. Struggle to stay on task? Ask for a timer that tracks your plan. Need to settle in? Arc can play lo-fi or nature sounds, right inside the session.
Adaptive timers
Built from the plan Arc already wrote for you.
Ambient sounds
Lo-fi, rain, forest — whatever gets you in the zone.
Session memory
Arc remembers everything in the session. Ask follow-ups freely.
Focus block
24:12
Chapter 4 · mechanisms & stereochemistry
Lo-fi · low
How it works
One thread. Everything
updates in place.
- 01
Tell Arc what you're studying
One sentence is enough. Arc builds a plan and fills in notes, flashcards, and a quiz — ready before you start.
- 02
Study in the flow
Ask for depth, a different angle, or harder questions. Every aid updates in place, tied to the same thread.
- 03
Prove you understand
Quiz yourself with MCQs or type free-response answers. Arc grades them and explains what you missed.
For developers
Open source.
Run it yourself.
Arc is AGPL-3.0 licensed. The stack is minimal: Next.js 16, React 19, Tailwind v4, Groq for generation, and Postgres for storage. Local mode uses an embedded database and skips auth entirely — no Supabase account needed to develop.
MIT-compatible stack
Next.js · React · Tailwind v4 · Groq · Postgres
AGPL-3.0
If you host a modified version as a service, share your changes.
Self-hostable
npm run dev and you're up. Add your Groq key and go.
terminal
$ git clone https://github.com/arctutor/arc.git
$ cd arc && npm install
$ cp .env.example .env
# add your GROQ_API_KEY
$ npm run dev
✓ Ready at http://localhost:3000
Local mode: embedded DB · no auth required
Who it’s for
Arc is for people
who want to learn.
Students
Prep for exams with a plan that fits your timeline. Flashcards, quizzes, and key points — all in one session.
Professionals
Pick up something new on the side. Arc structures what you learn and keeps you moving without the overwhelm.
Anyone
Curious about something? Arc is for people who want to learn, not just people who have to.