Shipping a mobile app on both iOS and Android doesn't require two separate codebases.
React Native with Expo gives you a single TypeScript codebase that ships native apps to both stores. One codebase, two stores, no compromise on performance. We've shipped React Native apps for consumer, B2B, and marketplace products. From $45k.
Need a mobile app on both iOS and Android without the cost of building separate Swift and Kotlin codebases
The false choice in mobile development: native iOS (Swift) and native Android (Kotlin) for maximum performance, or React Native for shared codebase but compromised performance. The reality in 2025: React Native with the New Architecture (Fabric renderer and JSI) delivers native-quality performance for 95% of mobile application use cases. The apps where native is genuinely required — games with 3D rendering, AR/VR applications, applications that push the limits of device hardware — are a small minority of business applications.
For B2B SaaS, consumer applications, marketplace products, and the vast majority of business mobile apps, React Native is the right choice: one codebase, two stores, TypeScript throughout (consistent with the web stack), and the Expo ecosystem covering camera, location, notifications, biometrics, and every common native capability without native code.
The practical implication: building native iOS and Android separately costs 2–2.5× as much as building React Native, takes longer, and creates two codebases to maintain going forward. Every bug fix, every new feature, every design change has to be implemented twice.
iOS and Android apps in the stores, sharing a single React Native codebase, with all the native capabilities the product requires
React Native + Expo
Expo SDK for access to the full native capability set: Camera, Location, Push Notifications (via Expo Push Notification Service), Biometrics, Haptics, SecureStore, and the full Expo API surface. EAS Build for cloud-based iOS and Android builds without requiring a Mac or Android build environment.
Shared backend
Same Convex database and Next.js API routes that power the web application. Mobile app is a client for the same data layer — no separate mobile API.
Push notifications
Expo Push Notification Service for cross-platform push delivery. Notification permission request UX following Apple's recommended pattern (show value before requesting permission). Background notification handling.
Offline capability
Async storage for local caching of critical data. Queue-based sync for offline operations with conflict resolution on reconnect.
App Store submission
EAS Submit for automated submission to App Store Connect and Google Play. Privacy nutrition label data, app category, age rating, and screenshot assets prepared for submission.
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
iOS and Android apps in the stores, sharing a single React Native codebase, with all the native capabilities the product requires
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
Mobile app development timelines are critical — a missed launch date has downstream implications for marketing, fundraising, and hiring. Fixed scope, fixed price, fixed delivery window.
Questions, answered.
Apple's review process typically takes 24–48 hours for standard submissions. Google Play takes 1–3 days. The first submission sometimes takes longer. The testing cycle on Test Flight (iOS) and Internal Testing (Android) happens in parallel with the review wait.
Yes — if the web application is also Next.js/React, shared TypeScript types, utility functions, and validation logic can be extracted to a shared package. The UI components are different (React Native vs. web React) but the business logic layer can be shared.
iOS + Android mobile application: from $45k. Fixed-price.
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.