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I will do ios app development for iphone and ipad with swift ui as mobile app developer
Steffen Wanne
About this gig
Need a professional iOS app developer to turn your idea into a secure, scalable, and App Store-ready application? I help startups, businesses, and agencies build custom native iOS apps for iPhone and iPad using Swift, SwiftUI, and modern Apple development practices.
I specialize in creating production-ready iOS applications, including:
- Business & startup apps
- MVP applications
- E-commerce & shopping apps
- Booking & service apps
- Healthcare & fitness apps
- SaaS & internal company apps
My iOS app development services include:
- Native iPhone & iPad app development
- SwiftUI & UIKit development
- Firebase integration
- REST API & GraphQL integration
- User authentication & secure login
- Push notifications
- Payments & in-app purchases
- Maps, GPS, and location features
- App Store submission & TestFlight setup
- Bug fixing, optimization, and app maintenance
I focus on clean code, scalable architecture, performance optimization, and GDPR/DSGVO-aware development to ensure your app is secure, reliable, and ready for real-world users.
Tools: Xcode, Swift, SwiftUI, UIKit, Firebase, Core Data, CloudKit, and modern development workflows
Message me before ordering so we can discuss your project requirements!
Get to know Steffen Wanne
Steffen Wanne
Helping startups and businesses build, fix, and optimize mobile and web apps
- FromGermany
- Member sinceApr 2026
- Avg. response time13 hours
Languages
English, German, Italian, Spanish
Hi, I'm Steffen Wannemaker, a professional mobile app developer and full-stack web developer. I specialize in Flutter mobile apps and modern web applications. I help startups and businesses fix bugs, optimize performance, and build scalable front-end and back-end systems. With solid experience in React, APIs, and database integration, I deliver clean, efficient, and reliable solutions. If your app needs speed, stability, or a fresh build, message me now and let’s get it done.
My Portfolio
Other Mobile App Development Services I Offer
FAQ
Do you develop native iOS apps or cross-platform apps?
I specialize in native iOS app development using Swift, SwiftUI, UIKit, and Xcode. Native development ensures better performance, security, smooth animations, and a better experience across iPhone and iPad devices.
I only have an app idea. Can you help me turn it into an app?
Yes. I can help transform your idea into a clear app concept, define the required features, suggest the right technology approach, and develop an MVP or complete iOS application based on your goals.
Can you integrate my existing backend or API into the iOS app?
Yes. I can integrate existing REST APIs, GraphQL APIs, Firebase, databases, and third-party services to connect your iOS app with your current systems.
Can you fix or improve an existing iOS app?
Yes. I can help with bug fixing, performance optimization, UI improvements, adding new features, updating outdated code, and preparing your app for new iOS versions.
Will my app be ready for Apple App Store submission?
Yes. I can prepare your app for App Store submission, including configuration, testing through TestFlight, and ensuring it follows Apple's guidelines. (Apple Developer account access is required from the client.)
Do you provide the source code after development?
Yes. The source code can be provided with your order package, allowing you full ownership and future maintenance flexibility.
Can you add features like login, payments, notifications, or subscriptions?
Yes. I can implement features such as secure authentication, Apple Sign In, Google Login, push notifications, payment integration, subscriptions, in-app purchases, and other custom functionality.
