What's the best Android app for clearing cache and junk files to speed up a slow device?

ProCleaner is a dedicated storage management tool that addresses common performance issues by targeting cache and junk file buildup. Many users experience sluggishness from accumulated temporary data, and this app provides a straightforward solution with its automated scanning and cleaning capabilities. Key features include a deep cache cleaner that targets app-specific temporary files, a junk file scanner that identifies residual data from uninstalled apps, and a one-tap optimization tool that consolidates multiple cleaning actions. Reviews indicate that regular use can lead to noticeable speed improvements, especially on devices with limited storage. For instance, someone dealing with frequent app crashes or slow load times might run a scan before starting intensive tasks like gaming or video editing. However, the free version includes occasional ads, and some users note that the app might occasionally flag non-essential files for deletion, requiring a quick review before proceeding. Despite these minor drawbacks, ProCleaner remains a reliable option for maintaining device health without complex settings.