This study explores how young adults think and feel about AI enabled mobile health apps, using focus groups with 15 participants aged 25 to 34. Through thematic analysis, the authors identified usability as the first major theme, with participants emphasizing that they are willing to use AI features only if the interface feels simple and genuinely personalized. A second theme of innovation and reliability captured a mix of excitement about AI’s potential and doubts about whether its predictions can be trusted in real health situations. The conversations also highlighted emotional reactions, with some participants appreciating the “supportive” feel of AI while others were worried it might make health management feel impersonal which was a third theme. Privacy concerns were a fourth central theme. Many participants questioned how their health data would be stored, shared, or possibly misused. These overlapping themes produced an overall sense of ambivalence rather than a clear acceptance or rejection. Participants recognized that AI could improve convenience and long term health tracking but they expressed hesitation about replacing human judgment with automated analysis. The authors argued that this tension reflects a need for mHealth tools that balance technology with psychological comfort and transparency.