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TechTool Pro 8 is the most robust hardware diagnostic tool available for Macintosh. Easy to use for both home users and professionals, TechTool Pro utilizes full 64-bit compatibility to keep your Mac running at its best. TechTool Pro 8 brings with it some of the deepest hardware testing yet - testing components on your motherboard that no other utility can access. You can now test the sensors and fans on your Mac, along with the battery if you're using a Mac laptop. In addition, we've now integrated Protogo, so that you can create your own custom test drives for out in the field.

You can now take it with more...

What's New

Version 8.0.3:

Note: Owners of earlier versions of TechTool Pro can upgrade to version 8 for $39.99.

  • OS X 10.11 (El Capitan) compatibility.
  • Increased eDrive volume size to 16 GB.
  • Added failed-sensors labels in the Reports category.
  • Added Fahrenheit temperature reading for Sensors Test.
  • Fixed reported File Structure-test crash.
  • more...


  • OS X 10.8 or later

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3 572


Current Version (8.x)


Downloads 1,576,186
Version Downloads 6,567
Type Utilities / System
License Updater
Date 22 Oct 2015
Platform Intel 64 / OS X
Price $99.99