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I will do flutter mobile app development, android ios app development flutter developer
Steffen Wanne
About this gig
Do you have a mobile app idea or a Flutter app that needs fixing or improvement?
Starting or scaling an app can feel confusing; poor communication, bugs, and delays can slow everything down.
I'm a Flutter mobile app developer focused on building fast, reliable, and scalable cross-platform apps for Android and iOS. I don't just write code. I help you bring your idea to life with clarity, structure, and consistent updates.
My Services:
- Full Flutter mobile app development (Android & iOS)
- Bug fixing and performance optimization
- API integration & backend connection
- Firebase integration (auth, database, notifications)
- UI/UX improvements
- Responsive design
- App deployment (Play Store & App Store support)
Technologies:
- Flutter
- Dart
- Firebase
- REST APIs
- Git
Apps I Build:
- Business & startup apps
- Ecommerce & booking apps
- Social & chat apps
- On-demand service apps
- Custom solutions based on your idea
Why Choose Me?
- Clear communication
- On-time delivery
- Regular updates
- Attention to detail
- Flexible with revisions and feedback
- Deliver maintainable and high-performance apps
Send me a message with your app idea, I'll respond quickly and guide you on the best way forward. LET'S BUILD YOUR APP NOW!
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 time1 hour
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
FAQ
Do you build both Android and iOS apps with Flutter?
Yes. I develop cross-platform mobile apps using Flutter, which means you get a single codebase that works smoothly on both Android and iOS devices with consistent performance and design.
Can you fix bugs in my existing Flutter app?
Absolutely. I can identify and fix crashes, UI issues, performance problems, and API errors while ensuring your app runs smoothly and efficiently.
Will I receive updates during the development process?
Yes. I believe in clear communication, so I provide regular updates and make sure you are involved at every important stage of your project.
Can you connect my app to a backend or database?
Yes. I can integrate APIs, Firebase, or custom backend systems to handle authentication, data storage, and real-time functionality.
What if I don’t have a clear app idea yet?
No problem. I can guide you through the process, help structure your idea, and suggest the best features to make your app functional and user-friendly.
