Build a fully offline app using React Native and WatermelonDB

The blog post provides a comprehensive guide on building a React Native app called "Weightress," designed to help users track their weight without the need for an internet connection. The app employs TypeScript, React Native, and WatermelonDB to store data locally on users' devices, allowing them to input their weight and optional notes, which can later be visualized through a chart using react-native-chart-kit. The guide walks through setting up the development environment, creating the database schema and models, implementing data handling and UI components, and integrating real-time data updates using WatermelonDB's withObservables higher-order component. It also suggests future enhancements, such as data export/import features, time-period selection for better data visualization, and reminder notifications to improve user engagement.