DS
Engineering Case Study•React Native (Expo SDK 51)

Ordo App

Enterprise Personal Productivity & Task Architecture

Production-ready enterprise task management app built with React Native, Expo SDK 51, TypeScript, NativeWind, Expo SQLite, and Zustand.

Architecture01
Clean / Feature-Driven
Expo SDK02
SDK 51
UI Primitives03
19+ Theme Primitives
Ordo App
React NativeExpo SDK 51SQLiteTypeScript
Core Motivation

Why It Was Built & The Engineered Solution

The Challenge

Mobile productivity applications often suffer from poor code organization, state sync bugs, tight coupling, and laggy offline persistence.

The Solution

Ordo provides a production-grade React Native & Expo application foundation adhering strictly to Clean Architecture, SOLID principles, high-speed MMKV key-value caching, and feature-driven module isolation.

Core Technical Capabilities

✓
Feature-driven folder architecture isolating domain business modules
✓
Ultra-fast MMKV key-value cache paired with Expo SQLite
✓
19+ theme-aware UI primitives powered by NativeWind v4
✓
Decoupled EventBus and custom AppError boundary hierarchy
✓
Zustand state management paired with TanStack Query v5
Architectural Blueprint

Functional Modules Breakdown (5 Modules)

Comprehensive module-by-module analysis of features, business logic, and implementation details.

01
Module 01Production Ready

Task Management Module

Complete Task Lifecycle Engine

  • Task priority matrix (High/Medium/Low), subtasks, and category tags
  • Persistent SQLite repository pattern with TanStack Query v5 cache
  • Real-time task completion tracking and instant search indexing
02
Module 02Production Ready

Clean Feature-Driven Architecture

Enterprise Codebase Isolation

  • Domain layers separating presentation, services, repositories, and types
  • Decoupled EventBus for cross-module side effect handling
  • Strict TypeScript strict-mode type safety throughout all layers
03
Module 03Production Ready

Local Storage & Security

Zero-Latency High-Speed Persistence

  • MMKV fast storage for instant state rehydration on app launch
  • Expo SecureStore for sensitive credentials and biometrics
  • Offline-first resilience with automated background sync support
04
Module 04Production Ready

Theme & UI Primitive System

19+ Atomic Design System Primitives

  • NativeWind v4 (Tailwind CSS) theme-aware components
  • Reanimated v3 gesture handlers for fluid touch feedback
  • Dark/Light mode seamless switching and persistent layout
05
Module 05Production Ready

State & Query Layer

Reactive State & Cache Invalidation

  • Zustand lightweight global state stores
  • TanStack Query v5 for automatic background cache invalidation
  • Optimistic UI updates for zero user waiting
Stack & Specifications

Technical Architecture & Security Model

Framework
React Native (Expo SDK 51)
Database Layer
Expo SQLite & MMKV Storage
State Engine
Zustand & TanStack Query v5
Security Spec
Expo SecureStore (Biometrics & Keys)

Architectural Patterns Executed

Clean ArchitectureFeature-Driven ModulesRepository PatternDecoupled EventBus

Tech Stack Summary

React NativeExpo SDK 51SQLiteTypeScriptNativeWind
Next Case Study

Lumetrix

Native Kotlin Android Digital Wellbeing & State Analytics

Explore Next App