Version 21.1.1
File Size: 42.1 MB
Release Date: 9/21/2026
How to apply this update: To perform this version update, launch an installed copy of the Techtool Pro 21 application and select the Check for Update… option located under the Techtool Pro menu. Users who have purchased from our site may login to their account to download an up-to-date version of Techtool Pro.
Changes:
- Added compatibility with macOS 27 “Golden Gate”
- Added support for Mac Studio models with M5 Max and M5 Ultra, and Mac mini models with M6 and M5 Pro
- Added Battery Check support for iPhone 18 Pro, iPhone 18 Pro Max, and iPhone Duo
- Improved Surface Scan handling and reporting when a drive stops responding
- Improved the estimated time remaining calculation in the Surface Scan test
- Updated the Gatekeeper recommendation in the Security Check tool
- Updated the Volume Structures and File Structures tests to exclude simulator disk images and related cryptex volumes
- Fixed an issue that prevented charts from loading in the Power tab of Techtool Monitor
- Fixed an issue where the Sparkle update dialog could interfere with the main application window
- Fixed an issue that could prevent Techtool Pro from quitting after displaying a returned-subscription notice
- Updated the Sparkle framework to version 2.10.0
- Applied additional minor fixes and general improvements
For complete change list, see the ReadMe file.
