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Letterboxd letterboxd.com

Can AI replace Letterboxd?

The logging half of Letterboxd is trivial: a table of films, a date, a rating, a note. The half people actually open the app for is everyone else, friends' four-star shrugs, review pages with thousands of jokes, lists that function as film school syllabi, and the year-end stats that only mean something because they are comparable. A one-shot build gives you a private diary with no one in it, and you will still need TMDB to get posters and metadata that do not look broken. If you genuinely only want a watch log, build it and enjoy the speed. If you want the film internet, you are not building the film internet this weekend.

Verdict: Nah · Keep paying, or use a free alternativeBuild time: one sitting
Nah

01What it costs

$1.58/moPro, annual subscription per member
$18.96per year at that price

Checked Aug 18, 2026 · source: letterboxd.com.

02Could AI build it for you?

The core job: A local film diary that searches TMDB for a title, logs a watch date, rating and review, and shows your history plus a stats page.

What a working version needs:

  • TMDB API key for film metadata and posters
  • Node 20+
  • SQLite (no server to run)

The diary is an afternoon; the audience is not. The moat is a decade of reviews, lists and rating distributions that only exist because everyone else showed up first.

03What you'd give up

  • Every other human: friends' ratings, popular reviews, comment threads
  • Curated and community lists, which are most of the discovery value
  • Aggregate ratings and the histogram that tells you if a film is divisive or just bad
  • Mobile apps, offline logging, share cards, streaming availability data
  • Importing your existing history back out of anything without a CSV wrangle

The paid tier is mostly a tip jar with benefits: no ads, better stats, watchlist filtering by streaming service, and a few power-user views. People pay because the free product already earned a place in their routine and the annual price is roughly a cinema ticket. The value being purchased is not features, it is continued access to a place where their taste is legible to other people who care about films. A private diary cannot sell that at any price.

05The build prompt

Paste this into an AI coding tool (such as Claude, ChatGPT, Lovable or Replit) to build your own version. Read the verdict first: this one is hard to get right.

prompt.txt
Build a local-first personal film diary web app. Single user, no accounts, no cloud, no telemetry.

Stack, non-negotiable:
- Next.js 15 with the App Router, TypeScript, Tailwind.
- SQLite via better-sqlite3, one file at ./data/diary.db, schema created on first run.
- No auth, no external services except TMDB for metadata.

Secrets:
- .env.local with TMDB_API_KEY. Commit .env.example only. Fail loudly with a readable message if the key is missing.

Data model:
- films: tmdb_id (primary key), title, year, director, runtime, poster_path, overview, cached_at.
- entries: id, tmdb_id, watched_on (date), rating (0.5 to 5 in half steps, nullable), review (text, nullable), rewatch (boolean), liked (boolean), created_at.
- watchlist: tmdb_id, added_at, note.

Features in scope:
- Search box that hits TMDB search, shows posters and years, one click to log. Cache the film row locally so the app works offline for anything already logged.
- Log form: watched date defaults to today, half-star rating widget, review textarea, rewatch and liked toggles.
- Diary view grouped by month, newest first, poster grid plus compact list toggle.
- Film detail page: local metadata, every entry you have for it, rating history.
- Watchlist page with add from search and a one-click promote to a diary entry.
- Stats page: films per year and per month, rating distribution histogram, top directors by count, total runtime in hours and days, longest streak of consecutive days with a log.
- CSV import that accepts the Letterboxd export format (Name, Year, Watched Date, Rating, Review, Rewatch) and matches to TMDB with a manual disambiguation queue for anything ambiguous.
- CSV export of everything.

Explicitly out of scope: any social features, follower graphs, comments, aggregate ratings, streaming availability, mobile apps, push notifications, deployment config.

Deliver: working app, README with setup in under five commands, seed script that inserts three sample entries so the stats page is not empty on first load.
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App prices, verdicts, alternatives and build prompts are adapted from Can I Vibecode It? (MIT License, © 2026 Rob Hallam). Each price shows the date it was checked and its source. Prices change; confirm on the vendor's site before you decide.