Lemonroot is a design, software development, and marketing consultancy founded by Evangelos Tzemis, specializing in mobile and web applications that combine technical excellence with exceptional user experience.
Athens, Greece
Get in TouchWe build software that actually works for people. That means sweating the details—how something feels to use, whether it makes sense intuitively, if it genuinely solves the problem it's meant to. Technology should fade into the background and just work, not demand constant attention or create friction.
Evangelos Tzemis started Lemonroot after studying Computer Science (MSc, University of Copenhagen) with a focus on mobile interfaces and working at companies like Beat, PNOE, and CERN—everything from ride-hailing apps to health tech to machine learning tools. His background in dance, music production, and photography shaped his obsession with craft and user experience—each discipline teaching a different dimension of what makes something work beautifully.
4+ years of expertise with Swift and SwiftUI, including advanced implementations like glassmorphic UIs, Apple Watch workout apps, and complex HealthKit data handling
3+ years building cross-platform applications with focus on performance and native-like experiences
Proven infrastructure managing 30+ white-labeled applications using Fastlane for automated deployments across multiple regions and scenarios
Lemonroot leverages a robust development infrastructure built on the latest AI-powered tools to deliver exceptional results efficiently. This advanced system:
Streamlines complex processes without sacrificing quality
Ensures all deliverables meet the highest market standards
Reduces time-to-market while maintaining meticulous attention to detail
Every project benefits from best practices and proven patterns
This infrastructure allows us to deliver enterprise-grade solutions with the agility of a boutique studio, ensuring consistently excellent outcomes for every client.
Lemonroot and its founder have delivered solutions for diverse clients across industries:
Lead developer and UX manager for nutrition and health applications, managing CI/CD pipeline for 30+ white-labeled apps
Latest client engagement for Lemonroot services
Custom mobile solutions for governmental operations
NBG Authenticator application
Contributed to major app redesigns serving thousands of daily users
Projects spanning Greece, UK, Denmark, Switzerland, and beyond
Whether you're a startup needing to build your first mobile app, an enterprise requiring sophisticated CI/CD infrastructure, or a company looking for a trustworthy development partner who combines technical excellence with exceptional design—Lemonroot is ready to help bring your vision to life.