What it was
PENXCHAIN needed a crypto wallet MVP that could support investor discussions and be extended post-handoff without a rewrite.
What I built
A React Native wallet for Android and iOS integrating the CoinGecko API for live token prices, market charts, and real-time portfolio tracking.
The architecture decision
The most important decision wasn’t in the UI — it was in the data layer. I structured the wallet so that adding a new chain meant dropping in a new adapter, not refactoring the core. The team needed to extend to additional chains after handoff, so modularity wasn’t optional, it was the brief.
The result
Delivered a demo-ready build that supported the team’s investor discussions. The client received the codebase with documentation for extending to new chains.
Delivered as a contract build. Not published to app stores by client decision. Demo available above.