5 Minutos
Com Deus

A personal devotional app: every day it shows the same Bible verse to everyone, chosen deterministically by date, with email/password or Google login, saved personal reflections per verse, and a Duolingo-style access streak.

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// About the project

What was built

5 Minutos Com Deus ("5 Minutes With God") is a personal devotional app built from scratch. The core idea is simple: every day, the app shows the same Bible verse to everyone, chosen deterministically from the date, creating a shared point of reflection across all users.

Users can sign in with email and password or Google login, save personal reflections per verse, and track a daily access streak, Duolingo-style, to encourage the habit.

All persistence runs on PostgreSQL with raw SQL, no ORM, and the project has a real integration test suite with Jest, running against a Postgres instance in Docker.

// Challenges

What made the project difficult

// Determinism

The same verse for everyone

Picking the day's verse deterministically from the date, with no saved state, so every user sees exactly the same text on the same day.

// Auth

Custom login + Google

Building custom authentication with cookie sessions and bcrypt, and integrating Google OAuth as an alternative login path, without relying on an external auth provider.

// Persistence

PostgreSQL without an ORM

Modeling and migrating the database with raw SQL and node-pg-migrate, without an ORM's abstraction layer, requires more manual care with every query.

// Testing

Real integration with Postgres

Writing integration tests that run against a real Postgres database via Docker, instead of mocks, to guarantee tested behavior matches production.

// Tools

Technical stack

Next.js 14

React 18

PostgreSQL

Tailwind CSS

SWR

Jest

Google OAuth

// Outcome

What I learned

Authentication from scratch: building cookie sessions, bcrypt password hashing, and Google OAuth in the same project teaches far more than reaching for a ready-made auth library.

Raw SQL has value: writing queries by hand, without an ORM, deepens understanding of how the database actually executes each operation.

Real integration tests are worth it: running against a real Postgres via Docker costs more setup, but catches issues a mock would never reveal.

Personal projects as a practice space: without a client deadline, I could explore architecture decisions more deliberately than on a commercial project.

5 MinutosCom Deus

5 Minutos
Com Deus