Mental health mobile apps are rapidly gaining popularity for offering accessible support and therapy tools. However, they also raise serious concerns about data privacy. These apps often collect sensitive user information such as mood patterns, medical history, and even location data. The lack of strict regulatory compliance, weak encryption practices, and third-party data sharing put user privacy at risk. Many users are unaware of how their personal data is being used or stored. Addressing these data privacy challenges is critical to maintaining trust and ensuring ethical usage. Strengthening transparency and adopting robust security protocols are essential steps forward for app developers.