To the uninitiated, they often appear to serve the same purpose. They have similar logos (a cute anime-style mascot named Suisho Shizuku), similar interfaces, and they both deal with storage drives. However, confusing the two is a critical error.
The simplest way to distinguish them is this:
If you have ever upgraded a hard drive, built a custom PC, or tried to diagnose a slow computer, you have likely stumbled upon the "Crystal" family of software. Two of the most ubiquitous utilities in the enthusiast and IT professional toolkit are CrystalDiskMark and CrystalDiskInfo .