About us

Our first app, Undercover ^^, was inspired by a fantastic reunion of friends in Norway.

We designed and built it from scratch, and have been blown away by the great response of our wonderful users!

Since then, we have taken great pleasure in building apps with love and hearing your feedback :)

We wish you a great time using our products with your family and friends!


Haiyan Ma and Josselin Pello

Partners and Founders of Yanstar Studio