In a context where states increasingly complement their physical presence with digital means, the classic idea of infrastructural state power needs reconsideration. The COVID-19 pandemic represents an unparalleled opportunity to that end, given the uniformity of one type of digital infrastructural intervention-the offer of contact tracing apps-and its highly varying performance across geographies.Against this backdrop, the article seeks to expand traditional discussions on state infrastructural power by testing a series of propositions on the explanatory factors behind tracing apps' emergence and adoption rates. The findings stemming from a pool of 150 countries show no straightforward connection between traditional and digital forms of infrastructural power.They also point at the primacy of governmental trust over financial, institutional, and technological factors-including privacy standards-when explaining high adoption, suggesting that the relational aspect of infrastructural power acquires a proportionally greater weight in the digital era.