Design-led app pages and developer notes — compact, factual, and focused on how things actually work.
Compact, factual docs
Built for how things actually work
We document the decisions, trade-offs, and lessons behind the apps we build. Our pages explain intent, implementation, and known limitations so other developers and curious users can learn, reproduce issues, or offer improvements.
Fastify — a minimal fasting tracker built for predictable reminders, low resource use, and privacy-first defaults.
Platforms: iOS & Android
Data: local-first; optional opt-in sync
Focus: reliability on low-end devices, clear reproducible behavior
Short, engineer-facing notes you’ll find on each project page: architecture highlights, main libraries, background task handling, reproducible bug steps, and concise postmortems. Example stack: Swift/SwiftUI · Kotlin · Node/Firebase · Postgres · CI/CD.
# Architecture highlights
- Local-first data layer with background-safe sync
- Deterministic reminders, OS-friendly scheduling
- Clear failure modes and retry policies
# Libraries (example)
iOS: Swift, SwiftUI, Combine
Android: Kotlin, WorkManager, Room
Server: Node, Firebase, Postgres
Infra: CI/CD pipelines with caching and tests
# Reproducible bugs
- Steps listed and verified, with logs and screenshots
# Postmortems
- Concise write-ups and actionable follow-ups
Each project page details background tasks, failure modes, and reproducible steps.
For bug reports or reproducible issues, email ali@brainify.dev with: device model, OS version, exact steps to reproduce, and logs/screenshots if available.
Device model and OS version
Exact steps to reproduce
Logs or screenshots (if available)