Martin Höller-Freelance Developer

I am a freelance iOS and macOS developer with nearly two decades of experience delivering high-quality apps across the Apple ecosystem. My track record spans startups, enterprises, and agencies, as well as independent app development with several successful App Store releases, including the meeting reminder app In Your Face, which was featured multiple times by Apple. I excel at adapting to the needs of each project: building greenfield apps from concept to launch as well as seamlessly integrating into large, established code bases. Whether defining architecture and user experience for new products or quickly delivering value in existing environments, I bring efficiency, reliability, and a strong focus on business outcomes. My expertise covers Swift, SwiftUI, and the full range of Apple frameworks and tools. Beyond technical delivery, I focus strongly on usability, clean user interfaces, and creating apps that align with business goals and delight end users. I have contributed to diverse industries including health tech (Clue), e-commerce (Thalia), mapping and mobility (Deutsche Bahn, Bosch eBike), always ensuring measurable impact for clients and users. What sets me apart is the ability to combine technical excellence with a business-oriented mindset. I understand the importance of timelines, budgets, and clear communication, and I adapt quickly to new domains and team structures. As a consultant and developer, I help businesses bring their ideas to life, strengthen existing products, and deliver reliable, user-focused software that stands out in competitive markets.