Mobile Offline-first

Offline-first mobile development

Mobile apps that work where there is no network: a local database, reliable synchronization and conflict resolution. Your field teams work without interruption: the network is no longer a requirement.

01The need

Your teams work where 4G doesn't reach: construction sites, basements, remote areas, on the move, industrial sites. An app that freezes the moment it loses the network is useless in the field. You need an app that keeps working, without losing a single entry, and syncs as soon as the connection is back.

02What we take on

Offline-first architecture: local data first
Embedded database (SQLite-style) and a sync queue
Incremental synchronization and conflict resolution
Offline file and media handling
Testing under degraded or absent network, not just ideal conditions
iOS and Android deployment, a single codebase

03How we work

We design the local data first, then background synchronization that is reversible and fault-tolerant. The user should never have to wonder whether they're online. That's exactly what we built for Uptime: a field-inspection app fully usable offline.

A concrete example

CAS-002

Mobile Offline-first

Uptime: offline-first inspection app

A field-inspection app that works with no network, with reliable sync when connectivity returns.

React Native
NestJS
SQLite

View the case study

Frequently asked questions

What is an offline-first app?

It's an app designed to work without a network first. Data is stored locally on the device, the user works normally even offline, and everything syncs automatically when the network returns. The network becomes a comfort, not a requirement.

How do you handle sync and conflicts?

We store data in a local database, then sync incrementally with the server as soon as a connection is available. Conflicts (two edits of the same record) are handled with rules defined together during framing. The goal is that no field entry is ever lost.

Which technologies do you use for offline?

On mobile, mostly React Native with a local SQLite-style database; on the server, NestJS and Node.js. The exact choice depends on data volume, device constraints and your context. We confirm it together during framing.

Does the app run on iOS and Android?

Yes. With React Native, we build a single codebase for iOS and Android, deployed to both stores. We also test behavior under degraded or absent network, not just ideal conditions.

An app that must hold up without a network?

Tell us about your field conditions and constraints: we come back with an approach and an estimate within 48h.

Book a call