Balanced Money

Personal finance, made clear. Live at https://balanced.money.

Most people trying to get a grip on their money build a spreadsheet, then quietly abandon it around month three. Balanced Money is that spreadsheet with the boring parts already done: the structure, the formulas, and the charts. You still bring the numbers — what you don't have to do is decide how to organise them.

It never connects to your bank. There is no Open Banking link and no third party with read access to your accounts: figures get in via a CSV you export yourself, or by typing.

The repository is named halcyon; the product it ships is Balanced Money. Same thing — the repo name predates the brand.

What it does

Transactions	Export a CSV from your bank and drop it in. Rows you've already imported are detected and skipped, so overlapping exports are safe, and every import is a batch you can undo in one click. Tag each row with a category.
Budget	What you meant to spend, month by month, split into Fixed, Variable and Discretionary. Once transactions are categorised the actual column fills itself in beside your plan. An optional transfers panel keeps money moved between your own accounts out of income and expenses.
Balance	What you own and what you owe, sorted by how soon it matters — current, medium-term, long-term, property. The bottom line is your net worth.
Dashboard	Read-only, and derived: cash flow, savings rate, spending by category and net worth over time, all drawn from the months filled in elsewhere.
Plan	The long view. Project income, spending, property, mortgages and pensions decades ahead to see whether the money lasts. Independent of the month-to-month figures.
Settings	Currency and number format, light/dark/system, which charts appear, categories and accounts — plus a full JSON export of your data and a permanent delete.

There is a guide at /about explaining the monthly rhythm the app is built around, reachable without an account.

More screenshots

Project docs

Built as a learning project, and documented like one. Start with the Playbook for how it was approached, or the docs directory for architecture and design.

Deployment

• Development: http://localhost:3210/ (pnpm dev or make up).
• Production: https://balanced.money (also served on the Vercel default domain, https://halcyon-silk.vercel.app).
• Hosting: Vercel runs the Next.js app (App Router server components + route handlers + middleware). Supabase provides managed Postgres and Auth. See ADR-001 for the rationale.
• Pipeline: pushes to master trigger GitHub Actions (.github/workflows/ci.yml) which runs biome ci, tsc --noEmit, Jest, and Playwright on Node 22 + pnpm 11. Vercel watches master independently and ships the build to production once its own build passes.
• Database migrations: applied by GitHub Actions, not by the host. The migrate-prod job in .github/workflows/ci.yml runs prisma migrate deploy against the production DIRECT_URL (unpooled Supabase connection, port 5432, supplied via the PROD_DIRECT_URL repo secret) — but only on push to master and only after lint/test + e2e pass. Vercel is configured to wait for this workflow before deploying, so the new code never goes live against an un-migrated schema. Migrations are forward-only; to undo, write a corrective migration. Manual fallback: pnpm exec prisma migrate deploy with DIRECT_URL set.
• Rollback: one click in the Vercel dashboard (it keeps every previous build immutable). Pair with a corrective DB migration if a release introduced a schema change.
• Secrets: managed in the Vercel project settings, not committed. The repo's .env.example lists every variable the app reads. See ADR-004.

Setup

Install dependencies with pnpm, then run the app in Docker for local development (this is what points it at the local database — see below):

  pnpm install      # install dependencies
  make build        # first run: build images, start Docker, migrate + seed (http://localhost:3210)
  # thereafter:  make            # start the app and local Postgres (attached)

Commands — make vs pnpm

• make for the app + the database (runs inside Docker, against local Postgres): make / make build (first-run setup) / make up / make down / make rebuild, make migrate-create name=<verb_table> (author a new migration), make migrate-deploy (apply pending migrations), make db-reset, make db-seed, make db-shell.
• pnpm for stateless checks (faster, and what CI runs): pnpm typecheck, pnpm check (lint+format), pnpm test, pnpm build, pnpm verify.
• Migrations: always make migrate-create / make migrate-deploy, never host pnpm prisma … — see the gotcha below.

Which database am I hitting?

Two databases exist: local Postgres (the Docker db service) and production Supabase. Production DB URLs live only in Vercel env vars and CI secrets — no local file holds them. Locally it shakes out as:

Command	Reads	Hits
App in Docker — make up	compose.yaml env (local)	local
App on host — pnpm dev (Next.js)	.env.development → .env	local
Prisma CLI on host — pnpm prisma …	nothing (prisma.config.ts loads no env file)	fails loudly

Two local env files, two roles: .env.development (committed) holds non-secret defaults — the local DB URL; the gitignored .env holds only the Supabase auth values (URL + keys, no DB URLs) — it's also the only file Docker Compose can interpolate ${...} from, which is why the secrets live there and not in a .env.local.

Prisma migrations always run inside the container — make migrate-create / make migrate-deploy — where compose.yaml pins DATABASE_URL/DIRECT_URL to the local db service. A stray host pnpm prisma migrate fails loudly (no connection string) instead of silently touching anything.

Documentation

I have done my best, with the support of AI to put a comprehensive set of documents in place to help me and others understand the project and its architecture.

• Tech Stack
• Playbook
• Data Models
• Architecture Decision Records (ADRs)
• Security Architecture
• Row Level Security — the two doors into the data, and the hand-written step Prisma can't generate
• Auth Flow (sequence diagrams)
• User Personas
• User Journeys
• Stakeholder Mapping
• Success Metrics
• Data Privacy Statement
• Design System (DESIGN.md)
• Accessibility Standards

Testing

The unit tests run against the code in the src/ directory, rather than the container code, which improved the speed and reliability of the tests. In other projects i have worked on, running tests against the container code was a common source of frustration.

Unit tests

To run the unit tests, use the following command: pnpm test, or one of the helpers listed below:

• make test
• make test-watch
• make test-coverage

Integration tests (real Postgres)

Server actions and DB queries (imports, categorisation, merge, provisioning, ledger queries) are tested against a real halcyon_test database, with only the Supabase auth boundary mocked. Files use the *.int.test.ts suffix and run in a node-env Jest project, separate from the unit run.

pnpm test:int

It needs a Postgres reachable at localhost:5432 (the db container from make up is fine — the test database halcyon_test lives alongside the dev halcyon DB). The command pins DATABASE_URL at halcyon_test and a guard refuses to run against anything else; globalSetup applies migrations.

End to end tests (E2E)

Run the tests locally:

1. Install browser system deps once: sudo npx playwright install-deps.

2. Install the project deps: pnpm install.

3. Install the browsers if missing: pnpm exec playwright install chromium.

4. Run the tests:

   make test-e2e                            # all specs
   make test-e2e name="transfers journey"   # only specs/tests matching the grep

   make test-e2e brings the local Postgres up and migrates halcyon_test first (see below), then runs Playwright. To run Playwright directly instead: pnpm exec playwright test (or --grep "<pattern>", or pnpm test:e2e:ui for the UI runner). Avoid pnpm test:e2e -- --grep: the bare -- reaches Playwright, which reads --grep as a positional file filter ("No tests found").

Playwright spins up two webservers automatically:

• a mock Supabase Auth server on localhost:54321 (see e2e/_mock/supabase.mjs)
• a Next.js dev server on localhost:3100 (the deliberately-different port lets the test server coexist with a developer's own pnpm dev on :3210)

Auth is always mocked (no real Supabase project is touched). DB-touching journeys (transactions, transfers) do hit a real halcyon_test Postgres at localhost:5432, connecting as test:test to match the CI Postgres service. The db container provisions halcyon_test and the test role automatically on first volume init (see docker/postgres-init.sql), and make test-e2e applies migrations to it — so a cold make test-e2e works end to end. Coverage and approach are documented in docs/features/auth.md.

Database Seeding

To seed the local development database, use the following command: pnpm db:seed, or one of the helpers listed below to seed and reset the database in the container.

• make db-seed
• make db-reset

Marketing screenshots

Landing-page screenshots live in public/marketing/ (dashboard.png, budget.png, balance.png, transactions.png).

Re-capture them whenever the dashboard, budget, balance or transactions UI changes — they are the first thing a prospect sees, and a stale set advertises a product that no longer exists.

The capture runs entirely locally against the e2e stack: the mock auth server, the halcyon_test database, and a dev server. Nothing touches cloud Supabase or production data, and the script signs itself in and seeds its own twelve months of demo data, so there is no session to set up by hand.

make e2e-db                                   # local Postgres, migrated
node e2e/_mock/supabase.mjs &                 # mock auth on :54321

NEXT_PUBLIC_SUPABASE_URL=http://localhost:54321 \
NEXT_PUBLIC_SUPABASE_PUBLISHABLE_KEY=sb_publishable_test_anon_key_for_e2e \
SUPABASE_SECRET_KEY=sb_secret_test_key_for_e2e \
DATABASE_URL=postgresql://test:test@localhost:5432/halcyon_test \
DIRECT_URL=postgresql://test:test@localhost:5432/halcyon_test \
pnpm next dev -p 3100 &

node scripts/capture-shots.mjs

The script refuses to run against anything but a local halcyon* database. Set CAPTURE_SCHEMES=light,dark to also produce -dark.png variants for design review — the landing page ships the light set only, since it is seen signed-out and serving both would mean downloading both.

Until the files exist the landing page renders labelled placeholders via MarketingShot, so the page ships and works correctly without them.

Contributing

Contributions are always welcome! Please open a pull request or issue to discuss any changes you would like to make.

Feedback

Issues and pull requests are welcome on GitHub.