sunny site up

sunny site up

Digital Agency

Your Hamburg-based specialists for Search Arbitrage, RSOC, and Affiliate Marketing – now expanding into mobile app development for iPhone, iPad and Android.

Get Started App Development

Our Expertise

From the first app idea to a growing audience: we combine mobile development with performance marketing.

App Development

Apps for iOS and Android – from concept and design to development, store release and ongoing maintenance.

Search Arbitrage

Maximize your returns through strategic search engine optimization and traffic monetization.

RSOC

Revolutionary social media marketing with proven ROI and measurable results.

Affiliate Marketing

Benefit from our expertise in performance marketing and partner program management.

App Development for iOS and Android

We are building our app development business: our first own apps for iPhone, iPad and Android are currently in development. This is how we work.

Concept & Design

We turn ideas into clear user journeys, wireframes and clickable prototypes that follow Apple's Human Interface Guidelines and Google's Material Design.

Native & Cross-Platform Development

Depending on the project we build native apps (Swift/SwiftUI for iOS, Kotlin/Jetpack Compose for Android) or a shared code base for both platforms.

Privacy & Security by Design

We collect only the data an app really needs, document it transparently in the App Store privacy details and the Google Play Data safety section, and comply with the GDPR.

Store Release & Maintenance

We handle beta testing via TestFlight and Google Play testing tracks, store listings and review, and keep apps up to date with new OS versions after launch.

How We Work

A clear process from the first idea to the store release.

  1. Discovery

    We define goals, target groups, core features and the right platform strategy.

  2. Design

    Wireframes, visual design and a clickable prototype to test the idea early.

  3. Development

    Iterative development with regular builds you can try on your own device.

  4. Testing

    Quality assurance on real devices, beta tests via TestFlight and Google Play testing tracks.

  5. Launch & Growth

    Store release, App Store Optimization and user acquisition with our performance marketing expertise.

Our Apps

Our first apps are currently in development and not yet available. Once they are released on the App Store and Google Play, you will find them here – together with support, privacy information and account deletion.

Learn more App Support

About Us

sunny site up is a digital agency based in Hamburg, Germany, operated by sunny site up GmbH and led by managing director Lutz Borkenhagen. We build digital products and grow them with search and performance marketing – and are now extending our work to mobile apps.

  • iOS Apps
  • Android Apps
  • App Store Optimization
  • Search Arbitrage
  • RSOC
  • Affiliate Marketing
  • Web Development

Contact

Planning an app or a marketing project? We look forward to hearing from you.

hello@sunnysiteup.agency

sunny site up GmbH
Müggenkampstraße 7a
20257 Hamburg, Germany

Questions about our apps?
Go to App Support