Jakub Kostrzewski (jk-jakubkostrzewski)

Poznan, Greater Poland Voivodeship, Poland

RevenueCat Shipaton 2025

Online

Ship apps and start making money.

$355,000 in prizes
Winners announced
51901 participants

RevenueCat Ship-a-ton

Online

Ship apps and start making money.

$25,500 in prizes
Winners announced
1674 participants

Global Gamers Challenge

Online

Build epic Flutter games to assist in the battle to defend the planet!

$103,890 in prizes
Winners announced
3481 participants