
myFoodDoctor (MFD) is a comprehensive digital health and nutrition tracking platform developed for the German market. The application enables users to log meals, track health metrics, and receive personalized dietary insights through a mobile app powered by a robust backend system.
Our team was responsible for building the complete backend architecture, including API development, database design, and performance optimization. The system is designed to handle millions of records while delivering fast, reliable, and accurate nutritional data at scale.

Tracking nutrition accurately requires handling large volumes of data, complex calculations, and personalized user insights. The client needed a backend system that could:
• Support large-scale data handling with millions of records
• Ensure accurate nutritional calculations for every user
• Deliver real-time performance without delays
• Manage complex meal logging and custom food data
• Provide reliable reporting and data consistency
• Maintain long-term performance as the database grows
We developed a scalable, high-performance backend system using .NET Core Web API and Microsoft SQL Server, designed with clean architecture and optimized for heavy data processing.
The solution includes a modular system capable of handling complex business logic such as nutritional calculations, meal tracking, and personalized recommendations. Special focus was given to performance engineering, data integrity, and scalability to ensure efficient operation even with massive datasets.
A flexible meal diary system allowing users to log food using ingredients, custom meals, or predefined recipes with accurate nutritional values.
A powerful calculation engine that processes calories, protein, sugar, fiber, and vegetable intake while handling serving size adjustments and complex meal compositions.
Dynamic nutrition targets based on user profiles such as age, weight, height, and gender, enabling personalized health optimization.
Dedicated modules to track daily water intake and exercise duration with intelligent recommendations.
Automated generation of detailed PDF reports with complete meal and nutrition breakdowns for selected date ranges.
Users can save frequently used meals and create reusable custom recipes for faster logging.
Smart grouping of meal entries into sessions for accurate lifetime meal tracking based on real eating patterns.

The solution delivered a high-performance backend system capable of handling millions of records efficiently. It improved API response times, ensured accurate nutritional calculations, and provided a scalable architecture for future growth. Reliable data management across active and archived datasets enhanced system stability and enabled smooth, real-time nutrition tracking.

This project highlights our expertise in building scalable backend systems for complex logic and large data volumes. We managed 50M+ records using an optimized architecture, advanced data archiving, and a high-accuracy nutrition engine, ensuring consistent performance and long-term scalability.


The myFoodDoctor backend is a strong example of a scalable, high-performance system built to handle complex logic and large-scale data efficiently. By combining robust architecture, accurate data processing, and optimized performance, we delivered a reliable solution that supports real-time nutrition tracking and a seamless user experience.




Felixphase Technologies is a results-driven digital agency specializing in web development, mobile apps, custom software, and digital marketing solutions for global businesses.