SD Maid SE (also known as SD Maid 2) is a file management tool for Android, specializing in device maintenance. Its primary purpose is to free up storage space and remove unwanted data.

Key features include:

- Removing residual data from uninstalled apps (CorpseFinder)
- Deleting expendable files, such as caches (AppCleaner)
- Customizable filters for miscellaneous files (SystemCleaner)
- Action scheduling (Scheduler)
- App management and disabling (AppControl)
- Storage analysis and overview