Creating an app for dietitians to create customized diet plans for their customers can be a valuable tool to streamline their work and provide more personalized services. Here's a basic outline of features and functionalities envisioned for the app:

User Authentication & Profiles   |   Dashboard   |   Diet Plan Creation   |   Nutritional   |   Analysis  |  Appointment Scheduling   |   Communication   |   Progress Tracking   |   Integration   |   Privacy & Security   |   Reporting & Analytics   |   Payment Processing   |   Mobile Accessibility   |   User Support   |   Updates & Maintenance   |   Feedback  |  Mechanism   |   Training & Onboarding   |   Data Backup & Recovery   |   Compliance & Regulations

As this is time bound exercise I have tried tocover a few features to demonstrate the app functionalities