The System Toolkit is an all-in-one information and maintenance app designed for macOS.
Information:

• System Information
• Menu Bar Extra
• Info Panel
• Overlay Window
• Hardware Sensors*
• Bluetooth Device Battery Levels
• Battery Information

Besides the information pages, the System Toolkit also offers the following maintenance features:

• Fast Maintenance: Clean your Mac System with a single click!
• Disk Cleaner
• Duplicate Finder
• Big Files Finder
• Privacy Protector
• Memory Cleaner
• App Cleaner

* This feature requires the Toolkit Server. This is a free tool which can be downloaded from my website. Further instructions can be found in the app.
Supported Operation Systems:
macOS 11.3 or later

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