Mobile App Development
Native & Cross-Platform Apps, Engineered to Ship
We build mobile apps that make it through App Store review on the first try, perform well on devices that aren't the flagship, and survive the OS updates that break lazy engineering. Whether it's a greenfield product, a companion app to an existing platform, or a replatforming of an aging hybrid app — we scope, build, and ship end-to-end.
Our stack spans native (Swift / SwiftUI for iOS, Kotlin / Jetpack Compose for Android) and cross-platform (React Native, Flutter) — chosen per project, not by default. For apps that need deep OS integration or real-time performance, native wins. For apps where one codebase across iOS, Android, and web keeps velocity high, cross-platform wins.
What's Included
A Zyfolks mobile engagement usually covers the full product, not just the client code. Mobile apps depend on backend APIs, authentication, push infrastructure, cloud storage, and a release pipeline that doesn't break every time Apple updates Xcode. We own all of it.
Key Features
- Native iOS & Android: Swift / SwiftUI and Kotlin / Jetpack Compose for apps that need platform-best performance and feel.
- Cross-Platform (React Native / Flutter): One codebase shipping to iOS, Android, and optionally web when velocity matters more than pixel-perfect native.
- Backend, APIs & Sync: Node.js / NestJS, Firebase, or Supabase — with REST or GraphQL, auth, real-time sockets, and robust offline-first sync where needed.
- Payments, Subscriptions & IAP: Apple's StoreKit and Google Play Billing for in-app purchases, plus Stripe / Razorpay for direct-to-card flows.
- Push Notifications & Deep Linking: Firebase Cloud Messaging, APNs, universal / app links, and re-engagement campaigns integrated with analytics.
- Offline Mode & Local Storage: Core Data, Room, Realm, or SQLite — with sync protocols that reconcile conflicts when devices reconnect.
- AI Features (on-device + cloud): OCR, object detection, voice interfaces, semantic search, and LLM-powered assistants via ML Kit, Core ML, TensorFlow Lite, or hosted LLM APIs.
- App Store & Play Store Launch: Signing, listings, screenshots, review submission, phased rollout, and post-launch crash / analytics monitoring.
Already have an Android-first build? See our Android app development service for the Android-specialist track, or combine it with this service for a multi-platform rollout.
Frequently Asked
Questions
Common questions about building, shipping, and maintaining mobile apps.
Native (Swift for iOS, Kotlin for Android) when you need best-in-class performance, platform-specific features, or tight OS integration. Cross-platform (React Native, Flutter) when one codebase shipping to both iOS and Android matters more than last-mile polish. We build both, recommend per project.
Both. Most clients ship on both stores from day one. When budget is tight, we scope a platform-first release (usually iOS in North America, Android in APAC) and ship the second platform a few weeks later.
An MVP with auth, 4–6 core screens, and backend integration: 8–12 weeks. A full production app with payments, notifications, offline mode, and polished UX: 4–6 months. We ship monthly to TestFlight / Play Console internal tracks so you see progress weekly, not at the end.
Yes. We manage the full launch pipeline: signing certificates, Play Console + App Store Connect setup, listings, review submission, and post-launch updates. If you don't have developer accounts yet, we'll walk you through the \$99/year Apple and \$25 one-time Google registration.
Routinely. In-app agents, semantic search, OCR, object detection, voice interfaces, and personalized recommendations. We use Google ML Kit, Core ML, TensorFlow Lite, and LLM APIs — picking based on privacy, latency, and cost constraints. On-device ML for sensitive data; hosted APIs when scale is the priority.
Yes. Most clients move to a monthly retainer covering OS updates, new features, bug fixes, and app-store resubmissions. Apple and Google release new OS versions yearly that often break things — ongoing maintenance isn't optional for apps in the wild.