About Calldorado

Calldorado is an industry-leading AdTech innovator, providing a complete solution for mobile app developers and publishers to drive commercial success. We offer products and services to increase revenue, growth and engagement. Our headquarters are in Copenhagen, Denmark but our reach is global, supporting app publishers from all corners of the world.

We tackle the two biggest challenges faced by app publishers – keeping users engaged and maintaining a sustainable revenue stream.

Our unique call-based SDK using patented technology incorporates an advanced call information functionality into communication-based apps which is packed full of additional features to benefit users. In addition to the enhancements offered by the call information screen, the app itself is presented to users at the most advantageous moments encouraging engagement, and generating sustainable revenue through advertising placements.

By blending years of experience as app developers with strong industry know-how, we are truly global experts at bringing commercial success to apps.

“Challenges, flexibility, fun and great colleagues – this is what working at Calldorado is for me. We have lots of room for development, initiative and creativity, and it never gets boring!”

– Marta, User Acquisition Manager

Red Herring Award

The Red Herring Top 100 awards highlights the most exciting startups from Asia, Europe and the Americas.


GMASA is the global summit for mobile innovations