App Enhancement on Replit

I've made significant progress on my app hosted on Replit, but now I need an expert to help me elevate it further.

Key Requirements:
- Fine-tuning of the GPT model to optimize performance and usability, focusing on improving response accuracy and context retention.
- Redesigning the app to improve its user interface, enhance the user experience and modernize its visual aesthetics.
- Implementing a secure user authentication system using email and password login.
- Assisting in setting up emailing and text features within the app.

Ideal Skills:
- Proven experience with GPT customization, particularly fine-tuning models for improved performance.
- Strong background in UI/UX design with a track record of creating modern, visually appealing interfaces.
- Proficiency in implementing secure user authentication systems.
- Experience in integrating communication features within an app.

I am looking for a professional who can take my app to the next level. You can view my current progress at https://wise-men-oracle-jausar.replit.app.