TechTool Pro 20
TechTool Pro 20 is a Mac diagnostic and repair utility for testing hardware, monitoring drive health, and troubleshooting storage problems.
What is TechTool Pro 20?
TechTool Pro 20 is a native Mac utility focused on diagnostics, testing, monitoring, and repair. It helps users check hardware health, examine storage devices, monitor SMART status, and run maintenance tools when a Mac is unstable or showing signs of drive trouble. The app includes guided test suites for quick, intermediate, or more complete system checks, along with tools for volume repair, memory testing, battery checks, cloning, and data recovery workflows. It also offers TechTool Monitor for ongoing background monitoring and alerts, plus support for APFS, Mac OS Extended, FAT32, and ExFAT volumes. Mac users, technicians, and support staff commonly use it to investigate crashes, verify component health, prepare backups, and catch storage issues before they become larger failures. TechTool Pro 20 is published by Micromat, Inc.
Key features
- Run complete or custom diagnostic test suites for Mac hardware and storage
- Test and repair supported volumes, including APFS, Mac OS Extended, FAT32, and ExFAT
- Monitor drive SMART data and other critical system conditions with background alerts
- Create volume clones for backup, migration, and maintenance tasks
- Check Mac and connected iOS device battery health and related battery data
- Build an emergency startup environment with eDrive for maintenance workflows
- Test memory and inspect hardware-related system information
- Recover data from damaged or unmounted drives to another location
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Mostly safe
This is a legitimate Mac maintenance utility, but its repair, cloning, partition, and recovery tools can make substantial changes to disks and stored data when you choose those actions. Background monitoring and drive-health access are normal for this kind of app. Before using repair or optimization features, make sure you have a current backup and review which disk or volume you selected.
Recommendation: Keep TechTool Pro 20 if you use it for Mac diagnostics, storage monitoring, or repair work. If you no longer rely on its testing or maintenance features, you can remove it; just remember that uninstalling it also ends its monitoring and alerting tools.
Common paths
/Applications/TechTool Pro 20.app
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