# AP Studio — Mobile App Development

> AP Studio builds native and cross-platform mobile applications for iOS and Android. Focused on responsive interaction, performance budgets, and architectures that scale beyond the first release.

Source page: https://byappi.com/app-development
Contact: journey@byappi.com

## What we build

- Native iOS apps in Swift / SwiftUI.
- Native Android apps in Kotlin / Jetpack Compose.
- Cross-platform apps in React Native and Flutter.
- Expo-managed workflows for fast iteration.
- White-label apps and SDKs.
- Backend integrations (Firebase, GraphQL, REST, custom).
- App Store / Play Store launch pipelines and ASO support.

## Stack

- Native iOS: Swift, SwiftUI, Combine, XCTest
- Native Android: Kotlin, Jetpack Compose, Coroutines, Room
- Cross-platform: React Native, Flutter, Expo
- Backend: Firebase (Auth, Firestore, Functions, Remote Config), GraphQL, Hasura, Supabase
- Push: APNs, FCM, OneSignal
- Analytics: Amplitude, Mixpanel, PostHog
- Crash + perf: Sentry, Crashlytics
- CI/CD: Fastlane, EAS, GitHub Actions, Bitrise

## Engineering principles

- Performance-first: 60 fps animations, cold-start budgets, battery profiling.
- Offline-tolerant data layer with optimistic UI.
- Modular architecture (feature modules, MVI/MVVM/TCA depending on platform).
- Accessibility: VoiceOver, TalkBack, Dynamic Type, large-text safe layouts.
- App-size optimization (ProGuard / R8, asset pipelines, on-demand resources).
- Privacy by default: ATT compliance, App Privacy manifests, granular tracking opt-in.

## Engagement model

- Discovery: 1–2 weeks (UX audit, technical scoping, platform decision).
- MVP: 6–12 weeks for cross-platform, 8–16 weeks for native.
- Post-launch: incremental releases, A/B testing, performance regression tracking.

## Native vs cross-platform decision

We pick stack based on product requirements, not preference:
- Native (Swift / Kotlin) — graphics-heavy apps, deep OS integration, AR, audio/video.
- React Native — product apps with web parity, fast iteration, large feature surface.
- Flutter — pixel-perfect custom UI, single design language across platforms.
- Expo — internal tools, MVPs, content-driven apps.

## Related

- [Website Development](https://byappi.com/llms-website-developemnt.txt)
- [AI Technology](https://byappi.com/llms-ai-technology.txt)
- [Marketing — SEO & GEO](https://byappi.com/llms-marketing.txt)
- [Studio overview](https://byappi.com/llms.txt)