Ferry Dwianta P.

Expert iOS Developer | SwiftUI, UIKit & AI Integration

Expert iOS Developer | Swift, SwiftUI & AI Integration I help startups, founders, and businesses build native apps for iOS, iPadOS, macOS, and take them all the way to App Store approval. New products, existing codebases, and AI-coded projects that need to become production-ready. WHAT I DO FOR YOU ▪ Build a new iOS app from idea to App Store approval ▪ Turn an AI-coded or vibe-coded project into a production-ready app ▪ Add AI features to your app ▪ Take over a stuck or messy codebase and make it maintainable ▪ Set up subscriptions and in-app purchases that actually work ▪ Native Apple features: WidgetKit, App Intents & Shortcuts, SiriKit, share extensions, Live Activities, AlarmKit, and others ▪ Maintain, refactor, and scale an existing app ▪ End-to-end App Store submission: build, TestFlight, review, approval AI INSIDE YOUR APP ▪ AI chat assistants and in-app chatbots ▪ LLM tool calling that reads and updates real data in your app ▪ RAG so answers come from your own data, not the model's guesses ▪ AI-generated content and AI recommendations ▪ Streaming, token-by-token responses ▪ On-device AI with Apple Foundation Models and Core ML: no API cost, no user data leaving the phone ▪ OpenAI, OpenRouter, Apple Intelligence, on-device speech recognition AI-ASSISTED DEVELOPMENT ▪ Agentic workflow with Claude Code, so features land in days instead of weeks, speed without the slop. ▪ AI does the heavy lifting, I stay in control. Architecture, design patterns and best practices are my calls, made as a professional iOS engineer. ▪ Built on Clean Architecture, Modularization, TCA or MVVM with modern Swift: Swift 6, async/await, Combine. Testable, scalable, and maintainable for the next developer who touches it. ▪ Proven in production. I've shipped LLM features to the App Store myself: chat assistants, tool calling, streaming, on-device speech. ▪ Proven at taking over vibe-coded projects and bringing them to production standard STACK Swift 6 · SwiftUI · UIKit · TCA · MVVM · Clean Architecture · LLM integration · Speech recognition · Supabase (auth, Postgres, row-level security) · Firebase · REST APIs · StoreKit · RevenueCat · WidgetKit · App Intents · SiriKit · AVFoundation · Core Data · SwiftData · Combine · async/await WHY CLIENTS KEEP ME ▪ 5+ apps published to the App Store: submission, review, approval ▪ Top Rated · 5.0 stars · 1,000+ hours delivered ▪ Professional iOS Developer in banking, currently working on a high-scale iOS app serving 30M+ users Got an app idea, a half-finished project, or a codebase that needs fixing? Send me the details and let's talk.