Google Sheets Add-On Developer with Payment, Admin Panel, and Referral Features

Google Sheets Add-On Developer with Payment, Admin Panel, and Referral Features Project Overview: I am looking to develop a comprehensive Google Sheets add-on, similar to the tools offered by Ablebits ([login to view URL] ) This add-on will offer users advanced data management, formatting, and processing capabilities in Google Sheets, with additional features for payment processing, an admin panel, and a referral program. Scope of Work: The freelancer will be responsible for developing, testing, and delivering a Google Sheets add-on that includes functionality, design, and technical requirements outlined below. This project will also involve creating a secure payment system, an admin panel for management, and a referral program to help with user acquisition. Core Features to Include: 1. Data Manipulation Tools 2. Merge and split data within sheets or across sheets. 3. Data cleaning tools for removing duplicates, finding unique values, etc. 4. Formatting Tools 5. Conditional formatting, quick formatting styles, and custom formatting presets. 6. Lookup and Search 7. Cross-sheet lookups and data comparison for locating duplicates or missing entries. 8. Calculation Tools 9. Sum, count, and average based on custom conditions. 10. Date-based calculations and trend analysis. 11. Import/Export Options 12. Simple import/export functionalities, such as CSV support for common business formats. Additional Features Payment Processing: Integration: Implement Stripe or a similar payment gateway for users to purchase premium features or subscribe to a paid plan. In-App Purchase Options: Include a free trial period and clear prompts for upgrading to paid features. Subscription Management: Ensure users can manage their subscription preferences within the add-on. Admin Panel: User Management: Ability to view, manage, and track users (both free and paid) within an admin dashboard. Subscription Tracking: Track active subscriptions, upgrades, downgrades, and cancellations. Analytics Dashboard: Key performance metrics such as monthly active users, conversion rates, and revenue data. Issue Resolution: Tools for manually adjusting user accounts, such as resetting subscriptions or managing payment issues. Referral Program: Referral Links: Provide users with unique referral links to share with others. Referral Tracking: Implement tracking to capture referred users, referral sources, and calculate referral rewards. Incentives: Allow for credit-based or monetary incentives, such as discounts on subscriptions for successful referrals. Technical Requirements: Framework: The add-on should be built using Google Apps Script for integration with Google Sheets and necessary backend functions. UI/UX Design: Use HTML/CSS and Google Apps Script’s UI framework for a polished, user-friendly interface. Clear, organized menu options, tooltips, and error handling for better user guidance. Authentication & Permissions: OAuth2 integration for secure access and data handling. Permission management to request only necessary scopes for the add-on’s functionality. Testing and Compatibility: Comprehensive testing across different environments to ensure compatibility with various data types. Cross-browser compatibility testing to ensure smooth performance. Documentation and Support: Provide basic documentation for all features and code to aid in future maintenance. Include brief user instructions and setup guidelines within the add-on. Project Milestones and Deliverables: [login to view URL] Feature Development: Complete and test all core data manipulation and formatting features. 2. UI Development: Design and implement a polished UI with full navigation and ease of use. 3. Payment System Integration: Integrate and test the Stripe payment gateway for subscription management. 4. Admin Panel: Develop an admin panel with user tracking, subscription management, and performance analytics. 5. Referral Program: Implement a referral program with unique links and incentive management. 6. Deployment: Prepare the add-on for deployment on the Google Workspace Marketplace. 7. Documentation and Handover: Provide code documentation, user guides, and maintenance guidelines upon completion.