Oskar Porębski

Oskar co-founded GrowThunders in 2022 after spending most of a decade running paid acquisition for mobile-first brands. The thesis was simple: bring the discipline of performance marketing — predicted CPA, attribution to D60, post-campaign retrospectives that hold up under audit — into a channel that was still being sold on impressions.

Four years later GrowThunders has shipped 1,400+ placements across 67 markets and 12 verticals. The InfluBase.io prediction model — Oskar's strategic anchor — landed a forecast accuracy of 80–90% across that delivery window. The numbers from those campaigns sit visibly in the Cost Atlas and Genre Performance Wheel that anyone can use, no agency required.

Oskar writes the playbooks the team runs from. Most of the blog content here is adapted from internal briefs and post-mortems — what we ship, what we'd ship differently, and the patterns that travel between verticals.