Kallo

The only tracking method accurate enough for Vietnamese home cooking is natural language description.

Kallo turns a sentence about what you ate into a structured breakdown of ingredients, weights, and macros. It began around how Vietnamese meals are actually composed — not how Western food trackers expect them to be — and now handles meals globally, matching against both FAO and USDA food data with multilingual input and output.

What it does

• Natural-language meal logging — describe a meal the way you'd tell a friend; Kallo extracts ingredients, preparation, and portions.
• Grounded ingredient recognition — a two-call AI pipeline (decompose, then ground against retrieved FAO/USDA candidates) matches local foods and dishes that generic trackers miss, with a Vietnamese-first heritage that now extends to global cuisines.
• Details change the estimate — the words people actually add carry through to the numbers. Say bỏ da and the fat drops; say cân sống and the weight basis changes; say 2 chén and the rice is counted rather than assumed from a setting filled in once.
• Macros you can trust — server-anchored protein and carbs, bounded estimates rather than false precision, with weight-basis and prep modifiers honored from the original phrasing.
• Portions you can see — an estimate that lands on a container or a cut shows the vessel it assumed, at true relative scale, and lets you correct it.
• Bilingual throughout — English and Vietnamese, with dish names kept in their own language and diacritics intact.
• Logging UI built for repeat use — fast input, mode-aware empty states, relog, barcode scanning, and history that's easy to scan.

Repository layout

A Next.js app at the root, with two satellites:

Path	What it is
app/, components/, lib/	The web app — Next.js App Router, React 19
lib/ai/	The estimation pipeline: decomposition, matching, portions, bounds
apps/mobile-flutter/	The Flutter mobile client
apps/docs/, content/docs/	The documentation site and its content
supabase/, scripts/	Schema, migrations, and operational scripts
docs/	Engineering docs — database, billing, email, deploy, data provenance

Stack: Next.js 16 · React 19 · Drizzle ORM over Supabase Postgres · TanStack Query · next-intl · Tailwind v4 · Biome · Vitest.

Running it locally

You need Bun. Running Vitest also requires Node.js 22.12 or newer. A Supabase project plus a Gemini API key are required for anything that touches the pipeline.

bun install
bun run setup:env     # scaffolds .env.local
bun run dev           # http://localhost:3000

The estimation pipeline needs real food-composition data, which a bare local Supabase does not have — point DATABASE_URL at a seeded project, or expect matching to return nothing.

Common tasks:

bun run test            # Vitest
bunx biome check --write <path>   # lint and format; scope it to what you touched
bunx tsc --noEmit       # types
bun run check:structure # size + folder + test-placement + barrel gate, enforced in CI
bun run eval:pipeline   # estimation quality harness
bun run dev:mobile      # Flutter client

Database work goes through bun run db:* (Drizzle) and bun run dbr:* (remote Supabase). docs/DATABASE.md explains which to reach for.

Status

Kallo is in active development. Versions follow Semantic Versioning; see CHANGELOG.md for what shipped in each release.

Source availability

This repository is published under a source-available license (see LICENSE). You may read, fork, build, and run the code for non-production use. Commercial use, redistribution, or hosting Kallo as a managed service requires a separate agreement — please get in touch.

Security

Please report suspected vulnerabilities privately — see SECURITY.md. Do not file public issues for security problems.

Contributing

Issues and pull requests are welcome. By submitting code you agree it can ship under the project's source-available license. Use Conventional Commit messages (feat:, fix:, perf:, etc.) — they drive the automated changelog.

Acknowledgements

Nutrient reference data derives in part from the Vietnam National Food Composition Table (2007) and the USDA FoodData Central database. Bootstrapped with create-next-app on Next.js 16 and React 19.