Supernova Cleaner is a free utility app for Android designed to help users manage their device's storage effectively. With features like a Large File Cleaner, it allows users to identify and delete unnecessary large files while providing clear previews to prevent accidental deletions. The app operates with the user's consent, ensuring a user-friendly experience. Additionally, it includes a Duplicate Photo Cleaner that scans the gallery for duplicate or similar images, enabling users to review and manage their photos without sending any data to external servers.

The app also offers a Wi-Fi Security Test, which evaluates the security status of nearby Wi-Fi networks, although it does not provide solutions for any identified issues. Another useful feature is the Screen Test, which displays various colors and patterns to help users diagnose dead or stuck pixels on their device's screen. Overall, Supernova Cleaner provides a comprehensive set of tools aimed at optimizing device performance and enhancing user control.