What do we do?

STAMP Software LTD

Free your music!

Ahoy Travel LTD

Clever tools for frequent flyers


Official fanclub of polish bestseller book


Run by Twins.

  • 2005

    We started programming

    Imagine 2 curious kids wanted to do things differently. We got into making websites in php and started making some money.

  • 2014-2015

    We won 2 hackathons and we were making product for Inventorum GmbH

    While working for Inventorum we got interested into hackathons and we have won 1st place at MediaHackDay and 1st place at Battlehack.

  • July 2015

    Stamp was created

    Our first product was created, that made 15.000€ first month. We have spent next months improving product, adding more integration and fixing bugs.

  • December 2015

    We have met Sylvia!

    We were thinking what to do next and Sylvia had really awesome idea that solves people problems, saves time and is exciting.

  • January 2016

    We invested and joined Ahoy Travel

    We really believe that this product can improve experience for frequent travelers, so we have put money that we made with Stamp and joined Sylvia full time.

  • Let's

Who we are?

We are twins, entrepreneurs and passionated developers

Bartosz Hernas

Mike Hernas

We are twins and our programming carrier started when we were 12. Our first projects were simple websites written in PHP, then we have made apps in Java and just before university we started making iOS apps.

After 6 months of studying we realised that working and making project give us so many opportunities that we decided to pause university and start again evening studies. It did not work out, we got awesome offer from Berlin where we moved in a month.

In Berlin we got into hackathons and we have won 1st place at MediaHackDay and 1st place at BattleHack Berlin what allowed us to visit San Francisco and met startup scene there. At the same time we have been working on new projects and ideas, which most of them failed and few of them succeeded.

Contact us