Definition of the problem In Germany, there is currently a significant gap in the care of persons affected by obesity due to the absence of a standardized therapy path, regional variations in health services, and case-by-case decisions for approval. This situation prompts the discussion of integrating digital obesity applications into the existing care framework. Arguments The analysis presents an ethical reflection on the use of digital health applications for obesity treatment, examining their suitability for this complex chronic condition, which has (...) multifactorial causes and a heterogeneous patient group. We evaluate the social, advisory, and organizational aspects required to meet the diverse needs of those affected. The study highlights key ethical challenges such as avoiding stigmatization and discrimination, acknowledging the diversity of patient groups, and integrating holistic therapeutic approaches. The article also emphasizes the importance of participatory research methods to incorporate the perspectives and experiences of patients systematically. Conclusion Digital health applications hold potential to significantly improve obesity care in Germany, especially in regions with limited access to traditional therapy options. Successful implementation, however, requires careful ethical reflection and empirical research. It is crucial that these applications address the diversity and complexity of the patient population and their specific needs, which will contribute to a reduction of the care gap. (shrink)