Excel Data Sync Mobile App

I need a mobile app for both iOS and Android platforms that automatically syncs and displays data from an Excel sheet.

Key Requirements:
- Automatic sync of data from Excel to the app.
- User login for secure access.
- Search functionality to easily find specific data.
- Data filtering options to customize the view.

Ideal Skills and Experience:
- Experience in developing mobile apps for both iOS and Android.
- Knowledge of data synchronization techniques, especially with Excel.
- Strong background in implementing user authentication and login systems.
- Proficiency in creating search and filtering functionalities within mobile applications.
- Familiarity with UI/UX design to ensure the app is user-friendly.

Looking forward to your proposals!