Many tasks performed by TechTool Pro can be handled natively by your Mac for free: Techtool Pro 21 - Micromat
: To bypass licensing, the original code of the application is altered, which often leads to frequent crashes, missing features, and data corruption . Many tasks performed by TechTool Pro can be
: Includes advanced memory testing, drive repair for APFS and other formats, battery health monitoring, and a "Check Computer" suite for full system diagnostics. which often leads to frequent crashes