I need an Android or PC based application for creating quotations, generating invoices, and tax receipts. It should support offline functionality, with essential features available without an internet connection. Key Features: - Creating Quotations: The app should allow users to create comprehensive and customizable quotations, including options to choose profile, colour, glass, mosquito netting, etc. - Generating Invoices: Users should be able to conveniently generate invoices based on the created quotations. - Generating Tax Receipts: The app should also support the generation of tax receipts. Additional Requirements: - Save as PDF: The ability to save these documents in a PDF format is essential. - Customer Data: The app should maintain a database of customer information. - Edit Old Quotations: Users should be able to access and make changes to previous quotations. - User Management: The system will need to support 1 admin user with the ability to add unlimited users. The admin should have visibility over all user data. Ideal skills and experience for this project include: - Strong knowledge and experience in Android app development, possibly with PC based development skills as well. - Proficiency in creating apps with offline functionality. - Prior experience in developing quotation, invoicing, and tax receipt systems. - Familiarity with data storage and user management systems.