Smart Defrag 4 PRO (1 year subscription) is a System Utilities::Benchmarking software developed by IObit. After our trial and test, the software was found to be official, secure and free. Here is the official description for Smart Defrag 4 PRO (1 year subscription):
Smart Defrag 4 PRO is designed for maximum hard drive performance. Based on IObit latest disk defrag engine and "Boot Time Disk Defrag" technology, Smart Defrag 4 is created with the world's leading defragmentation ability. It intelligently accelerates disk speed and the whole system for top performance. you can download Smart Defrag 4 PRO (1 year subscription) free now.