Your web app works on desktop. Your users are on mobile. That gap is costing you retention.
A responsive web app is not a mobile app. Users who primarily work on their phones experience a degraded version of your product — small touch targets, no offline support, no push notifications, no camera access, no app store presence. We build the React Native mobile version of your existing web application.
Your NPS surveys, support tickets, or churned customer interviews all say the same thing: the mobile experience is bad. You've known this for a while. The question is how to build the mobile app without rebuilding the entire application.
The most common mobile gap pattern in SaaS and b2b applications: the product was built for desktop-first use cases, the API is REST or GraphQL, the business logic lives in the backend, and the web frontend is a Next.js or React application that's responsive but not truly mobile-native. Responsive design makes the web app usable on mobile; it doesn't make it a native mobile experience.
The difference matters to users who primarily work on mobile. A mobile web app has: slower load times, no offline support, no push notifications (or severely limited push with web push, which iOS restricts), no access to device features like camera, GPS, or biometrics without HTTPS and browser permission prompts, and no app store presence. A native mobile app (or a React Native app) has all of those capabilities, loads instantly after the first open, and occupies a persistent presence on the user's home screen.
For applications where mobile is a significant use case — field service apps, customer-facing consumer products, apps for on-the-go professionals — the web app is a substitute for a mobile app that isn't good enough. Users tolerate it or they churn. The support tickets that say "the mobile experience is terrible" are describing a product gap, not a bug.
A React Native mobile app for iOS and Android that shares your existing business logic and API layer — not a rebuild of the entire product, but a native mobile client that connects to the backend you already have.
API layer audit
Before the mobile client is built, we audit your existing API to identify what's available from mobile, what needs to be extended, and what mobile-specific endpoints need to be added (push notification token registration, offline sync, device-specific features). The audit produces a clear picture of the backend work required.
Shared authentication
Clerk (or your existing auth provider) works across web and mobile — the same user account works on both the web app and the mobile app. Session management for mobile (token refresh, secure storage using React Native Keychain, biometric authentication unlock) is included.
Core feature parity
The primary workflows that your mobile users need — not necessarily every feature in the web app, but the specific workflows that mobile users need to complete their jobs. Feature selection is driven by your user research, your support data, and your product strategy.
Push notifications
Expo Push Notification service for cross-platform delivery. Notification types are defined by the workflows in the app: assignment notifications, status change alerts, message notifications, payment confirmations.
Offline support for critical flows
Forms and views that need to work without connectivity cache the relevant data and queue writes for sync when connectivity is restored. Not every feature needs offline support — only the workflows where users are in low-connectivity environments. Built on React Native, Expo, TypeScript, Clerk, connecting to your existing backend API.
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
A React Native mobile app for iOS and Android that shares your existing business logic and API layer — not a rebuild of the entire product, but a native mobile client that connects to the backend you already have.
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
A mobile client for an existing application has a defined scope: specific features from the existing web app, specific mobile-specific additions, and defined integration with the existing backend. Fixed scope, fixed price.
Related engagements.
Questions, answered.
Usually not significantly. The API you expose to your web frontend is the same API the mobile app will call. Mobile-specific additions are typically: push notification token management, optimised endpoints for mobile data volume, and potentially offline sync support. These additions don't require backend refactoring.
App Store (Apple) and Play Store (Google) review processes are included in the project scope. First-time submissions require Apple Developer Program enrollment ($99/year) and Google Play Console registration ($25 one-time). Review times are typically 1–3 days for App Store and same-day for Play Store.
React Native and Next.js are both React, but they're not the same codebase — React Native renders native components, not web HTML. You can share business logic (API calls, state management, utility functions) via a shared package, but the UI components are separate. A shared monorepo structure makes code sharing practical.
A React Native mobile client with core feature parity, push notifications, and Expo deployment to both stores typically runs $45k–$80k. Offline sync and complex background processing add cost. Fixed-price.
12 to 16 weeks for a production React Native app on both iOS and Android stores.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.