Google Play Crawler JAVA API is a tool designed for searching and downloading Android applications from Google Play Store programmatically. The tool provides functionality to search for Android applications on Google Play and download them directly to desktop systems with a single click through a web interface. It includes check-in capabilities that can generate ANDROID-ID for users, utilizing Galaxy S3 device properties during the check-in process. This means only Galaxy S3 compatible applications will be retrieved through the API. When attempting to download applications incompatible with Galaxy S3, the tool will return an exception message indicating the item could not be found. The project is built using SBT (Scala Build Tool) and requires Protocol Buffers compiler (protoc) version 2.5 for building. It supports multiple platforms including OSX and Ubuntu/Debian systems. The tool is based on the googleplay-api project and provides a straightforward implementation for accessing Google Play Store programmatically.