Hash Droid is a free utility designed for Android devices that allows users to calculate hashes from text or files stored on their devices. With a variety of hash functions available, including Adler-32, CRC-32, MD5, SHA-256, and more, users can generate digital fingerprints to uniquely identify strings or files. The application offers features to copy calculated hashes to the clipboard for easy reuse.

The program consists of tabs for calculating hashes from text, files on internal or external memory, and even allows users to compare hashes. Hash Droid's functionalities are commonly utilized in cryptography for generating secure passwords and ensuring file integrity, with specific use cases such as verifying Android ROMs before flashing them.