A developer built an app that sends a daily SMS message using Azure Functions and Java, fetching weather and affirmation data from external APIs. The app uses a TimerTrigger to run daily at 7:30am UTC, sending a formatted message with today's date, weather, moon phase, and affirmation. The code is available on GitHub and can be deployed as an Azure Function. The developer provides instructions on how to set up the project, add dependencies, fetch data from APIs, format the message, and send it via SMS using Twilio. Once deployed, the function can be tested in the Azure Portal, and the developer invites readers to extend the app with additional features and share their own implementations.