10 million users is too many to rely on guesswork

Nearly two years have passed since the launch of the redesigned version of Poland’s largest retail app. Today, it is used regularly by almost 10 million people. At this scale, growth is no longer just about adding new features and services - it also means taking responsibility for delivering a consistent, high-quality user experience across the entire product.

Using real examples from Żappka, we'll show how we validate hypotheses, explore new business areas, and evolve the product without compromising consistency. We'll focus not only on what worked, but also on the decisions we changed because the research told us we were wrong.

If you build digital products, you'll leave this session with practical approaches to making better product decisions - whether you're working on an app used by millions or building your very first product.