**React Native CLI:**

React Native CLI is a great choice for the core development framework. It lets you code once and deploy on both Android TV and mobile platforms for Android and iOS.

**Maps library:**
Why use a maps library? Maps visually show where things are located, helping users understand the layout of elements like missionary locations. To achieve this, we'll use the React Native compatible map library, react-native-maps, for the world map feature in your app. This library smoothly fits with React Native, making the integration process easy. It displays map tiles, allowing us to create an engaging world map. With markers, we can highlight missionary locations, making it simple for users to discover and learn more. The library's interactive features like zooming and panning enhance user engagement. In short, react-native-maps is chosen for its effectiveness in showcasing missionary locations and creating an interactive, user-friendly world map, aligning perfectly with our goals for your app.

**Data management:**

Some data need to handle locally and sotre in local state to optimize app for this we will use redux library for managing church-specific data and missionary information within the application. Simply put, Redux serves as a powerful tool for local state management, allowing us to maintain consistency in data across all components of the app. This means that when users interact with different parts of the application, the data remains synchronized, providing a seamless and reliable experience. By employing Redux, we ensure that your church-specific data and missionary information are efficiently handled, contributing to a smoother and more cohesive application.

**QR code/scanning:**

To effortlessly scan QR codes on your church map, we need a library like react-native-vision-camera. To streamline the scanning of QR codes on your church map, we're incorporating a library called react-native-vision-camera. This tool ensures a quick and secure scanning experience, fostering deeper connections and igniting a passion for your church's global outreach. It's designed to make the scanning process seamless, ensuring your users have a smooth and engaging experience.

**Authentication:**

To ensure the utmost security for user accounts within the application, we'll be incorporating robust libraries such as react-native-firebase or react-native-auth0. These libraries are dedicated to providing secure user authentication and authorization. By leveraging their functionalities, we aim to establish a solid foundation for safeguarding user accounts, ensuring that access is only granted to authorized individuals. This approach enhances the overall security of the application and guarantees a reliable authentication process for your users.

**Subscription Management:**

As you mentioned to add in app subscription . We're integrating the widely-used library, react-native-iap. This library comes packed with platform-specific APIs tailored for both iOS (StoreKit) and Android (Google Play Billing). It simplifies the process by enabling you to define products, initiate the purchase flow, and effortlessly manage purchase events such as success, failure, and restoration. This ensures a smooth and user-friendly in-app purchase experience, enhancing overall functionality.

**Development Approach:**

**Phased development:** Step into progress with our step-by-step plan! In Phase 1, we'll start by creating a solid foundation – an amazing interactive world map featuring markers for your missionaries. Watch their stories unfold on the big screen! In the next phases, we'll make things even cooler by adding features like phone ID scanning for personal connections and monthly subscription options for ongoing support.

**Code sharing:** We'll simplify things with React Native's shared codebase magic! We build the essential stuff just once and use it seamlessly on both the Android TV app and, potentially, the phone app for ID scanning – making it a time-saver that lets you connect with your community wherever they prefer.

**Data Handling:**
Firebase and MongoDB are both powerful databases used to store data, each offering distinct advantages based on factors such as application scale, complexity, and specific requirements.
**Firebase:**
Firebase is an ideal choice for storing data in online storage for smaller applications. Its real-time database and cloud storage services offer a convenient and managed solution for handling data in the cloud. Firebase excels in simplicity and ease of use, making it suitable for quick development and maintenance. For smaller-scale applications where straightforward online storage is a primary requirement, Firebase provides seamless integration.

**APIs with MongoDB:**
When it comes to storing data in online storage for applications with extensive data volumes and high user traffic, integrating APIs with MongoDB becomes essential. MongoDB's robust NoSQL capabilities and flexible schema design are well-suited for managing large amounts of diverse data. APIs built on MongoDB allow customization of features, optimizing performance based on specific needs. This approach not only ensures efficient online storage but also provides a secure and scalable solution for applications anticipating substantial growth and complex data interactions.

**Security Measures:**

We secure our applications by taking these steps

Developing an index file in the assets folder for secure asset interaction, enhancing overall application security.

Encouraging the use of relative paths instead of direct paths to assets for improved security.

Implementing access control mechanisms to restrict unauthorized access to assets.

Integrating tokenization and robust authentication to ensure only authenticated users can access sensitive parts, including assets.

Encryption for particularly sensitive assets is considered to add an extra layer of protection.

Implementing secure transmission protocols (such as HTTPS) to ensure assets are transmitted securely, guarding against man-in-the-middle attacks.