Cross-Platform Expense Tracker App Development -- 2

I'm looking for an experienced mobile app developer to create an Expense Tracker app that works on both iOS and Android platforms. The app should include:

Core Features:
- Expense Categorization: Users can categorize their expenses for better tracking.
- Budget Setting: Users can set budgets for different categories.
- Report Generation: Users can generate reports to view their spending habits.

User Authentication:
- The app should have an email/password login system for user authentication.

Ideal Skills and Experience:
- Proven experience in developing cross-platform mobile apps.
- Strong knowledge of user authentication systems.
- Ability to implement expense categorization, budget setting, and report generation features.

Please provide examples of similar work done. Looking forward to your proposals!