Event Management App Development

I'm seeking an experienced app developer to create a comprehensive event management app for both iOS and Android platforms. The app will track each event's location, manage minor expenses with proof, and include an approval system. Additionally, it should handle payment proofs with GST and TDS tracking.

Key Features:
- Event tracking with location
- Minor expenses proof with approval system
- Payment proof with GST and TDS tracking
- Generate a detailed document for each event with P&L

Ideal Skills and Experience:
- Proven experience in mobile app development for both iOS and Android
- Strong understanding of expense tracking and financial documentation
- Experience with approval systems and payment integrations
- Ability to deliver ASAP

Please include relevant experience in your application.