You learn something. You forget it in a week. This fixes that.

Revise is a browser extension + web dashboard that:

• Auto-detects the platform you're using (LeetCode, Codeforces, HackerRank, Khan Academy, etc.)
• Lets you add custom platforms — track any website you learn from
• Times your study with a built-in timer — no manual entry
• Schedules revisions using the SM-2 spaced repetition algorithm (same algorithm behind Anki and SuperMemo)
• Shows a dashboard with stats, charts, activity feed, and a filterable table of everything you've tracked

No passwords. Sign in with a magic link. Your data is yours.

10+ platforms supported out of the box, plus add your own.

Full analytics: items tracked, difficulty breakdown, platform distribution, revision schedule, and daily activity — all in one view.

No passwords to remember. Enter your email, click the link, you're in.

The extension auto-detects the URL and title. Navigate to any supported platform and it picks it up instantly.

Start a timer when you begin studying. When you're done, rate your recall (1-5 stars), add notes, and save. The SM-2 algorithm handles the rest.

Browser Extension (Chrome / Safari)
        |
        |  REST API
        v
   FastAPI Server  -->  Supabase (Postgres + Auth)
        |
        v
   Web Dashboard (revise.mrinal.dev/dashboard)

1. Study something on any supported platform (or add your own)
2. Click the extension — it auto-detects the URL and title
3. Start the timer, study, stop when done
4. Rate your recall (1-5 stars) and save
5. SM-2 schedules your next review — things you found hard come back sooner, easy ones later
6. Check the dashboard for what's due today, your stats, and your full history

Any other URL works too — it's tagged as "other". You can add custom platforms from the dashboard settings to auto-detect any website.

• SM-2 Spaced Repetition — the same algorithm behind Anki and SuperMemo. Rate your recall 1-5 stars, and the system schedules your next review at the optimal time.
• Built-in Timer — start when you begin studying, pause/resume, stop when done. Time is recorded automatically.
• Custom Platforms — add any website from the dashboard settings. Define a name and URL pattern, and it auto-detects just like the built-in platforms.
• Analytics Dashboard — items tracked, difficulty breakdown, platform distribution, revision schedule, daily activity feed.
• Magic Link Auth — no passwords. Enter your email, click the link in your inbox, done. Powered by Supabase Auth.
• 10+ Platforms — auto-detects LeetCode, Codeforces, HackerRank, CodeChef, GeeksForGeeks, InterviewBit, AtCoder, NeetCode, AlgoMonster, DesignGurus.
• Browser Extension — Chrome and Safari. Captures the current URL with one click.
• Due for Revision — the extension and dashboard both show which items are due today, so you always know what to revise.
• CSV Export — download your entire history as a CSV.
• Per-user Data Isolation — Row Level Security on Supabase. Each user only sees their own data.

1. Go to revise.mrinal.dev
2. Click Get Started Free
3. Enter your email and click Send Magic Link
4. Check your inbox, click the link — you're logged in
5. Install the browser extension (see below)
6. Start learning!

1. Download extension.zip
2. Unzip the downloaded file
3. Open chrome://extensions in Chrome
4. Enable Developer mode (top right toggle)
5. Click Load unpacked and select the unzipped folder
6. Pin the extension from the puzzle icon in the toolbar

Safari: Available on request. It requires a macOS/iOS native app wrapper built with Xcode. Reach out at dmrinal626@gmail.com and I'll send you the build.

Create a Supabase project and run this in the SQL Editor:

create table public.questions (
  id bigint generated always as identity primary key,
  user_id uuid not null references auth.users(id) on delete cascade,
  url text not null,
  title text,
  platform text,
  difficulty text,
  self_rating integer check (self_rating between 1 and 5),
  time_taken integer,
  notes text,
  solved_at timestamptz default now(),
  easiness_factor double precision default 2.5,
  interval integer default 1,
  repetitions integer default 0,
  next_review date,
  last_reviewed timestamptz,
  attempts integer default 1
);

alter table public.questions enable row level security;

create policy "Users see own questions" on public.questions for select using (auth.uid() = user_id);
create policy "Users insert own questions" on public.questions for insert with check (auth.uid() = user_id);
create policy "Users update own questions" on public.questions for update using (auth.uid() = user_id);
create policy "Users delete own questions" on public.questions for delete using (auth.uid() = user_id);

create index idx_questions_user_url on public.questions(user_id, url);
create index idx_questions_next_review on public.questions(user_id, next_review);

-- Custom platforms (for user-defined URL patterns)
create table public.user_platforms (
  id bigint generated always as identity primary key,
  user_id uuid not null references auth.users(id) on delete cascade,
  name text not null,
  url_pattern text not null,
  created_at timestamptz default now()
);

alter table public.user_platforms enable row level security;

create policy "Users see own platforms" on public.user_platforms for select using (auth.uid() = user_id);
create policy "Users insert own platforms" on public.user_platforms for insert with check (auth.uid() = user_id);
create policy "Users update own platforms" on public.user_platforms for update using (auth.uid() = user_id);
create policy "Users delete own platforms" on public.user_platforms for delete using (auth.uid() = user_id);

create unique index idx_user_platforms_unique on public.user_platforms(user_id, name);

Configure Auth redirect URLs in Supabase Dashboard:

• Site URL: https://your-domain.com/dashboard
• Redirect URL: https://your-domain.com/api/auth/callback

Create a .env file:

SUPABASE_URL=https://xxx.supabase.co
SUPABASE_ANON_KEY=eyJ...
SUPABASE_SERVICE_ROLE_KEY=eyJ...
SUPABASE_JWT_SECRET=your-jwt-secret
SERVER_URL=https://your-domain.com

docker compose up -d

The server starts at http://localhost:8765. The landing page is at / and the dashboard at /dashboard.

Update the SERVER_URL in the extension's config to point to your self-hosted instance.

All endpoints except auth require an Authorization: Bearer <token> header.

The revision schedule uses the SM-2 algorithm:

The easiness factor adjusts over time. Things you consistently nail appear less frequently. Things you struggle with keep coming back until they stick.

• Backend: Python, FastAPI
• Database: Supabase (Postgres + Row Level Security)
• Auth: Supabase Auth (magic link / passwordless)
• Frontend: Vanilla HTML/CSS/JS (no frameworks)
• Extension: Manifest V3 (Chrome & Safari)
• Deployment: Docker Compose

Contributions welcome! Open an issue or submit a PR.

MIT