Fitness apps enhance workout routines by offering personalized training plans, tracking progress, and providing motivation. They often feature exercise libraries, instructional videos, and progress tracking, making it easier for users to adhere to fitness goals. Many apps also incorporate social features, allowing users to share achievements and connect with others for added accountability. Additionally, some fitness apps provide nutritional guidance and health-related insights, creating a more holistic approach to wellness. Overall, these tools can help users stay motivated and engaged in their fitness journeys.