Inventory Management App Development

I need an Android application for my business. This app is for my staff to see, purchase, and update inventory items.

Essential features:
- Inventory Updates: I can add or modify items.
- Purchase History Tracking: Log what has been bought.
- Notification Alerts: Staff get updates on changes.
- Mark as Purchased: Manual entry of items bought.

Ideal skills & experience:
- Android development
- Experience with inventory management systems
- Strong UI/UX design for ease of use
- Experience with real-time data updates