TechTool Pro is one of the most robust hardware diagnostic tool available for Macintosh. Techtool Pro 12 takes advantage of the latest technologies introduced with the release of macOS 10.15, Catalina. Previous versions of Techtool Pro had to make certain compromises to support earlier versions of macOS. With Techtool Pro 12, we have been able to take advantage of more advanced methods to perform many of the tasks that make up the functionality in Techtool Pro. We have updated many of the tests and tools to use these technologies to keep your Mac running smoothly.
Techtool Pro supports iCloud Drive. Simply download the new Techtool Remote iOS app (free on the App Store), and open it. Techtool Pro will then send test results to any iOS device logged in to the same iCloud account. So if you have a long test (or tests) running that you want to know the results of, but you need to hit the road, you can now get notified of your results anywhere you have an internet connection.