2026-03-08 · 5 min read
Expo + shared APIs for a production mobile app
How to ship a React Native / Expo client that shares auth and APIs with a web product — patterns used on Nadriverzum.
One backend, two clients
Production mobile apps fall apart when the Expo client invents its own API contract. The durable approach is a shared backend — REST or typed clients — that both web and mobile consume with the same auth model.
On Nadriverzum, the React web app and Expo mobile client talk to the same services for profiles, chat, and token-related flows, including ICP/Motoko integrations where the product needs Web3.
What to get right early
Auth and session refresh on device. Token storage, deep links, and expired-session recovery matter more on mobile than on a short-lived browser tab.
Shared validation. Zod (or equivalent) schemas used on both client and server prevent “works on web, breaks on device” payload drift.
Release discipline. EAS builds, environment configs, and a clear path from preview to store or internal distribution keep iteration honest.
When to bring in help
If you already have a Next.js or Node API and need a production Expo client — or the reverse — a scoped mobile sprint is one of the engagement models on this site.
Related case studies
- Nadriverzum — Community platform spanning React web and Expo mobile — country and profession galaxies, member directory, classifieds, direct messaging, and ICRC-1 token flows on the Internet Computer.