About FoundationUI
Creative Engineering.
Bridge the gap between design and engineering, and streamline app development for Apple platforms.
Story
FoundationUI was born from a problem every design and engineering team faces: how to hand off designs, keep them in sync, and systematize the process while maintaining scalability and quality.
Through years of building highly-crafted applications for Apple platforms – including work with Leica Camera on their LUX and FOTOS apps (used by millions of photographers worldwide) and with the Multi team (acquired by OpenAI in 2024) – we’ve experienced these friction points firsthand. This led us to build developer toolkits that accelerate design, prototyping, and development user interfaces for SwiftUI applications, with a focus on interfaces that feel truly native.
Unison
Since April 2023, we’ve developed more than 20 Swift Packages for macOS and iOS that simplify the engineering of customizable user interfaces. These tools improved developer workflows, but didn’t solve the core challenge: the complexity of design-engineering communication.
In 2025, we connected all the dots with Unison – a familiar design tool environment built around FoundationUI’s technologies, featuring two-way sync with your codebase and the benefits of development tools like versioning and git-integration. It bridges the gap between design and development, bringing both disciplines into a unified environment.
Company
Founded by Art Lasovsky. Based in Aarhus, Denmark, we work remotely with teams across the globe, enabling seamless design-engineering collaboration to SwiftUI projects on Apple platforms. Our approach combines deep design engineering expertise with a focus on highly-crafted interfaces that feel native to the Apple ecosystem.
