Music software has traditionally been developed in ecosystems of technology that artists combine to create their tools for compositions. The ability to connect artefacts has developed thought the evolution of music technology. Today, the mobile platform has become an increasingly important ecosystem for music applications, combining traditional technology with the platform specific infrastructure. To make an artefact's design valid in the ecosystem, designers and developers need to support this infrastructure. This paper present the design process of c3n loops, an iOS music app based on zoomable user interface in contrast with the platform's design idioms. The c3n loops design relies on its own design idioms while balancing the support for platform specific technologies such as AudioBus/Inter-app Audio, Ableton Link beat synchronisation, and MIDI.