Independent Product

BookSwap

A mobile-first marketplace app for physical book exchange — featuring ISBN scanning, state-driven swap workflows, and real-time messaging.

React Native · Expo · TypeScript · Redux Toolkit · Firebase · PostgreSQL · Next.js

Case Study↗Marketing Website↗

App demo

Product walkthrough

Onboarding — build your infinite library

Profile — library, wishlist & settings

Overview

BookSwap turns read books into new discoveries. Users scan barcodes to build digital shelves, browse a 28M+ title database, and initiate local trade proposals seamlessly.

I led the product development end-to-end: designing the UX, engineering the React Native cross-platform architecture, integrating dynamic state machines for swap flows, and launching on the App Store.

Highlights

High-performance barcode scanning & instant ISBN lookup (28M+ database)
Stateful swap engine supporting multi-step exchange negotiation
Real-time messaging architecture tied directly to swap contexts
Dedicated Next.js marketing web app optimized for SEO and conversion

My role & scope

Product vision, UX design, and component hierarchy
React Native & Expo cross-platform mobile architecture
Global state design (Redux Toolkit) & backend integration
App Store deployment, marketing landing page, and analytics tracking