You will get your legacy Objective-C iOS app modernized to Swift
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Project details
Is your iOS app stuck on old UIKit or Objective-C — slow to update, painful to maintain, and holding your roadmap back? I modernize it to clean, future-proof Swift and SwiftUI.
I'm a senior iOS engineer with 14+ years shipping apps across health, fitness, streaming and finance. I recently took a live production app from 14,700 lines of Objective-C to 24,851 lines of Swift — 30 screens, 157 files, an 82-scene Storyboard fully removed, 100% Swift at the end.
How I work: I migrate incrementally, screen by screen. Your app keeps building and running at every step — no risky all-at-once rewrite, no long broken period. You get clean MVVM, a focused service layer with async/await, and UIKit bridges only where they make sense.
Every project starts with an audit and a fixed-price roadmap, so you know the scope, the risks, and the cost before any code is written. Heavy business-logic screens are scoped separately — no surprises later.
You get: 100% Swift, full source code, tests on critical flows, and a walkthrough of the new architecture so your team can build on it.
Send me your repo or a design and I'll tell you honestly how I'd approach it.
I'm a senior iOS engineer with 14+ years shipping apps across health, fitness, streaming and finance. I recently took a live production app from 14,700 lines of Objective-C to 24,851 lines of Swift — 30 screens, 157 files, an 82-scene Storyboard fully removed, 100% Swift at the end.
How I work: I migrate incrementally, screen by screen. Your app keeps building and running at every step — no risky all-at-once rewrite, no long broken period. You get clean MVVM, a focused service layer with async/await, and UIKit bridges only where they make sense.
Every project starts with an audit and a fixed-price roadmap, so you know the scope, the risks, and the cost before any code is written. Heavy business-logic screens are scoped separately — no surprises later.
You get: 100% Swift, full source code, tests on critical flows, and a walkthrough of the new architecture so your team can build on it.
Send me your repo or a design and I'll tell you honestly how I'd approach it.
Platform
iOSApp Type
Native AppDevelopment Technology
Swift, Objective-CApp Purpose
Chat, Finance, Health & Fitness, Maps & Navigation, Productivity, Social NetworkingExpertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$299
|
Standard
$1,999
|
Advanced
$5,999
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 18 days |
Number of Revisions | 1 | 2 | 3 |
App Store Upload | - | - | |
Source Code | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$149
Unit Tests
(+ 2 Days)
+$799
Performance Optimization
(+ 2 Days)
+$599Frequently asked questions
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AS
Alexey S.
Mar 18, 2026
Need help developing a macOS application (MVP).
LS
Loop S.
Feb 1, 2026
Fix and Finish Vibecode iOS App
Good work
AN
Aaron N.
Mar 6, 2025
iOS Engineering and rapid prototyping
ZG
Zainab G.
Dec 22, 2024
iOS Engineering Support
VM
Vasiliy M.
Oct 31, 2023
Senior iOS developer needed for AI chatbot app
Mikhail is a professional who completed the work quickly, efficiently, and honestly. Highly recommended.
About Mikhail
Senior iOS Developer | SwiftUI, AI, macOS
100%
Job Success
Batumi, Georgia - 1:57 am local time
14+ years across iPhone, iPad, Apple Watch, and Mac - Swift, SwiftUI, UIKit, Objective-C.
Recent projects:
- HealthKit + OpenAI MVP to TestFlight in 3 weeks
- Real-time Whisper transcription pipeline with structured insights
- Incremental Objective-C to Swift / SwiftUI migration on a live production app
- Real-time streaming and chat for a live-sports SDK at 30K concurrent viewers
I can help you:
- Build a new iOS app from idea or design to TestFlight / App Store
- Integrate OpenAI, Whisper, Gemini, or on-device AI
- Fix crashes, improve performance, and clear App Store rejections
- Add subscriptions with StoreKit 2, RevenueCat, or Superwall
- Modernize legacy Objective-C / UIKit without breaking production
- Review your architecture and code, and plan how to scale it without a rewrite
Not sure where to start? I also do one-off consultations - architecture reviews, a second opinion on your codebase, or a clear plan before you commit to a build.
Send me your idea, a design, or an existing repo. I'll look at it and come back with a real plan - milestones, timeline, honest tradeoffs.
Steps for completing your project
After purchasing the project, send requirements so Mikhail can start the project.
Delivery time starts when Mikhail receives requirements from you.
Mikhail works on your project following the steps below.
Revisions may occur after the delivery date.
Audit & migration roadmap
I review the codebase, map every screen by complexity, and give you a fixed-price plan. Heavy business-logic screens are scoped separately so there are no surprises later.
Incremental migration
Screen by screen, UIKit/Objective-C to modern Swift and SwiftUI. Your app keeps building and running throughout the migration, avoiding a risky full rewrite.