What is the best clean up app for Windows 10/11 PC?

AVG TuneUp. It is a comprehensive clean up app for PC that helps free up storage space, remove junk files, optimize background processes, update software, and generally improve system performance. It combines tools to remove temporary files, cache, unused apps, and other clutter that builds up over time, and can help speed up startup and everyday performance.

Step 1: On the main dashboard, click Scan now to let TuneUp analyze your system for junk, unused programs, and performance issues. Your first scan gives a full overview of items that can be cleaned or optimized.

Step 2: In the side menu, select Clean Junk. Choose the categories you want to clean (e.g., temporary system files, browser cache, log files). Click Clean to remove selected items and free up disk space.

Step 3: Go to Settings → Auto-Clean and toggle it On to let TuneUp regularly remove unnecessary files automatically. You can customize the frequency and file types it removes.

Step 4: From the menu, choose Optimize Disks to check for problems affecting performance and follow the on-screen prompts to fix them. Optionally run a registry cleanup to remove leftover entries that can slow the system.