IObit SmartDefrag is a smart tool to maintain your system performance, speed and stability for no cost at all. IObit SmartDefrag helps defragment your hard drive more efficiently than any other product on the market.

Smart Defrag 4 is a FREE, light, and stable disk defragment tool designed for maximum hard drive performance. Based on IObit latest disk defrag engine and "Boot Time Disk Defrag" technology, Smart Defrag 4 not only provides defragmentation, like any typical disk defragmenter can do, but also intelligently streamlines your files based on using frequency, thus accelerating disk speed for faster data access! With the unique Deep Analyze technology, it smartly clean junk files before defragmentation to save more disk space for you. Being the first Disk Defragmenter that fully supports Windows 8/8.1 Metro Apps, Smart Defrag 4 works fast, automatically and quietly in the background and is a disk defragmenter suitable for large hard drives.

Whats New:
+ Enhanced Windows 10 compatibility
+ Enhanced Trim feature for higher SSD performance
+ Added support for 4K monitor
+ Optimized UI and settings for easier use
* Fixed general bugs







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