Millions of parents across Europe use mobile baby-tracking applications. These digital aides generate intimate data sets by accessing sensitive information about (un)born babies, pregnancies, and family caregiving routines. Crucially, the tracking infrastructures embedded in these apps enable...

Mobile applications for multiple sclerosis (MS) hold growing potential for self-management and remote monitoring. However, research on how they generate value for patients and other stakeholders remains limited. Existing studies emphasize usability or adoption, while overlooking their role...

I study how third-party firms respond when a platform owner enters its own marketplace, analyzing Apple's entries into App Store submarkets from 2016-2021. Using text embeddings to define markets and a staggered difference-in-differences design, I find that Apple's entry deters new competitors...