Android Receipt

We are looking for a skilled Android developer to create a **simple, fast, and privacy-focused receipt/invoice scanning app** for a small sole proprietor business. The app should allow users to scan receipts and invoices quickly, automatically detect edges, crop, compress, and save them in organized monthly folders.
This app is intended for offline use, with **full local storage control**, no cloud requirements, and minimal UI complexity.
Key Features / Requirements:
Camera & Scanning
- App opens directly into camera mode on launch
- Automatic edge detection and perspective correction using OpenCV
- Suggested crop overlay on capture; user can adjust corners manually
- Fast and reliable capture flow
Metadata Entry (Compact Overlay)
- After crop confirmation, a compact overlay at the top of the screen allows:
- Merchant Name: Dropdown of previous merchants + option to add new
- Total Amount: Numeric input
- Date: Defaults to today but editable
- Cat...