Gemma (2016)

Gemma is a platform that allows anyone to easily create and share music creation apps. The platform consists of two parts: First, GemmaLib, an easy-to-use app-builder for mobile music-making. And second, the Gemma app, which contains an in-app market place.


Since all of the current mobile music creation apps are developed by different individuals and therefore work separately, these apps lead users to experience a limited amount of features and a lack of integration between apps during the music creation process. On the other hand, there are thousands of musicians creating amazing music creation apps that cannot be used by the general public simply because there are no distribution opportunities. There is a need for a centralized distribution hub for music creation apps where users can find and use everything they want in one place.


Gemma levels the playing field by giving the indie developers an easy to use app builder ‘GemmaLib’ to develop cross-platform applications as well as a market place for distribution. There are about 100,000 musicians creating musical apps who could potentially populate the market place. And more than 125 Million people are using music creation apps on their smart devices. Gemma has the opportunity to become the new standard in music creation app commerce by providing one place to create, share and purchase these music creation applications.


Azurite is an intuitive ambient music generator. It allows anyone to easily create beautiful relaxing songs and to explore the relationship between sound and visual art.


- Each shape represents a different sounding instrument.

- Touch the screen to play and hear the sound of a selected shape.

- Hold down the shape and play to record your play.

- Double-tap the shape in order to clear the recorded play.

- Try changing the pitch and scale.

- You can store up to 7 different songs. 


I designed and built Gemma and GemmaLib through a global startup accelerator program Startupbootcamp Mobile in Copenhagen, Denmark in 2014. After receiving a seed funding of $25,000 from Flashstarts in 2015, I co-founded a software development company Iceblink Digital, Inc. with co-founder Matthias Sperling who first joined the team as a marketing intern.

Gemma has won several prizes and awards including the 3rd Prize in Creative Business Cup 2015 and Startup award winner at Danish Sound Day 2015. It was also exhibited at the Mobile World Congress 2016 in Barcelona, Spain sponsored by the Korea Institute of Startup and Entrepreneurship Development (KISED).

Since the official launch in February 2016, Gemma and GemmaLib have inspired and been used by many music creators and developers until the end of 2017 when we decided to stop the service for not having enough users to continue the business.

The below are some of the apps (Gems) I designed and built using the GemmaLib app builder.


Zircon is a professional 8-track drum machine. Paint your own patterns, choose from powerful drum samples, record your beats in real-time and save your songs. Change the drum kit, tempo, swing, velocity and pattern to make your beats unique.


Emerald is a polyphonic synthesizer with a built-in sequencer. This powerful synthesizer offers endless music creation possibilities. Create all kinds of electronic music with four voices, effects, adjustable parameters - all wrapped up in a minimalistic and easy-to-use design.

I designed and developed these apps from beginning to end. I designed an initial draft by drawing my ideas on a sketchbook and later implemented it using GemmaLib, a set of Pd abstractions for creating mobile apps that run through the Gemma app. Some of the default presets were created by a co-founder, Matthias Sperling. Recording and sound editing of the demonstration videos were done by an intern, Sebastian Thinggaard Rostved.

Software Engineer | UX Designer | Creative Technologist