Mobile health apps have the potential to aid in patient recovery and promote healthy lifestyles. However, some apps are misguided in their development if they fail to address a specific problem or just collect data without translating it into useful information for users. Properly evaluating usability is also important to ensure efficiency and user satisfaction. When developing an app, developers must consider relevant technologies, stakeholders, and regulatory requirements. They should also involve clinicians to help ensure the app meets real needs and will be adopted.