This project is an Android Application called December. It is an animal-saving shelter application that collects donations from society to keep the shelter running. In the application, the main feature is that the user can donate through two methods, the first is to adopt a pet online through donation, and the second method is to purchase food supplies for the shelter. This app provides a way to help the animal shelters continue as a going concern and provide ways for people who love animals to help but cannot have pets. Most of the features are designed from the users' perspective. In technique, the project was developed with JAVA, and all data was stored on a cloud-hosted NoSQL database called Firebase. The user uses Paypal as a payment method.