Mobile applications
An app for iPhone and Android, built once and working everywhere. Your customers have you in their pocket.
Transparent Investment Ranges // Engineering Standard
A fixed price agreed before work begins, based on the audit. No hidden costs or endless hourly billing.
The first tangible production result in your business. I focus on one critical process, eliminating risk and delivering working software in a fraction of the usual time.
- Source code for iOS and Android
- Push notification integration (OneSignal / Expo)
- Offline mode with a local SQLite database
- 30-day stability warranty and post-launch support
A comprehensive platform for the entire organization. Advanced decision loops, deep two-way database integrations, complete audit logging, and dedicated engineering support under an SLA.
- Source code for iOS and Android
- Push notification integration (OneSignal / Expo)
- Offline mode with a local SQLite database
- Biometric authentication (FaceID / Fingerprint)
- Support with publication in the Apple App Store and Google Play
- Priority SLA, 24/7 monitoring, and architect support
Modern Mobile Applications in practice
Engineering approach and system architecture
I solve business problems by starting with the process. No rigid ready-made templates: I build software around your procedures.01 // MODULE
From design to release in both app stores
I design, build and publish; you receive a complete app with full post-launch support. A cross-platform React Native + Expo app: one codebase for iOS and Android.
Native appearance and performance on both platforms without doubling the work or budget. REST API backend integration, push notifications (Expo Push), authentication (OAuth, JWT), and background data synchronization.
Your mobile app connected to an existing backend. App Store and Google Play publication: certificate preparation, configuration, submission, and review handling.
OTA updates through Expo EAS without waiting for store approval.
02 // MODULE
Why React Native
React Native is a mature technology used by Meta, Shopify, and Microsoft. Expo adds ready-made build and publishing tools that eliminate weeks of configuration.
I choose it because it lets me deliver a full application for both platforms in the time an agency would spend on iOS alone. 80% shared code One codebase for both platforms means lower maintenance costs and faster updates.
Expo Managed Workflow: a quick start, ready-made native modules, EAS Build, and EAS Submit without configuring Xcode or Android Studio. Over-the-air updates: fixes and new features reach users immediately, without waiting weeks for store review.
Native performance. React Native renders native UI components, not a WebView. 60 fps animations and responsiveness comparable to apps written in Swift or Kotlin.
03 // MODULE
From kickoff to the App Store
6–10 weeks from the first meeting to an app in users' hands. Week 1: design, wireframes, and UX prototype.
Key flows validated before a single line of code is written. Weeks 2–5 (or 2–9): Development. Iterative sprints, with a working test version available every week through Expo Go or TestFlight.
Full visibility of progress. Final weeks (1–2): Review + launch. Final testing, submission to the App Store and Google Play, and handling feedback from the Apple / Google review teams.
Production deployment.
04 // MODULE
Let's talk about your app
Describe your idea, and I will return with a proposed scope and quote within 24 hours. A free discovery call with no obligation.
Request a quote All services Mobile apps
What You Receive with the Implementation:
- Source code for iOS and Android
- Push notification integration (OneSignal / Expo)
- Offline mode with a local SQLite database
- Biometric authentication (FaceID / Fingerprint)
- Support with publication in the Apple App Store and Google Play
Technologies and production standards:
I choose technologies for stability, speed, and reliability. No technical debt.
Modern Mobile Applications
FAQ
Frequently asked questions about modern mobile apps: architecture, implementation, data security, costs, and technologies:
01 Will one app support iOS and Android? +
Yes. I build with React Native and Expo, so one codebase supports both iOS and Android without doubling the budget. Around 80% of the code is shared, reducing maintenance costs and speeding up changes.
02 How long does a mobile app project take? +
6–10 weeks from the first meeting to an app in users' hands. Week 1 covers wireframes and a UX prototype. Weeks 2–5, or 2–9, are iterative sprints with a weekly test build. The final 1–2 weeks cover final testing, store submission, and production deployment.
03 Why React Native instead of separate native apps? +
React Native is a mature technology used by Meta, Shopify, and Microsoft. It renders native UI components rather than a WebView, delivering 60 fps animations and responsiveness comparable to apps written in Swift or Kotlin. Expo adds ready-made build and publishing tools that eliminate weeks of configuration.
04 Do you handle publication in the App Store and Google Play? +
Yes. I prepare certificates, configuration, submission, and responses to Apple and Google review teams until production launch.
05 How quickly do updates reach users? +
With over-the-air updates in Expo EAS, fixes and features reach users immediately, without waiting weeks for store review.
06 Will the app connect to our backend? +
Yes. I connect REST APIs, Expo Push notifications, OAuth/JWT authentication, and background data synchronization. The project also includes offline mode and testing.
Start building.
First conversation free.
A free 30-minute technical consultation. After the call, I will provide an architecture proposal, timeline and transparent quote within 24 hours.