* ETS Official Website: The official ETS website (ets.org) offers official TOEFL iBT practice tests that you can purchase and access online. These work on any device with a web browser, including Macs.
* Third-party Prep Books/Software: Many publishers (Kaplan, Barron's, etc.) sell TOEFL prep books and software. While some might offer software downloads, these are usually compatible with Windows and macOS. Check the system requirements before purchasing. Often, the software is just a supplement to the book, which contains the majority of the practice questions.
* Online Prep Courses: Many online TOEFL prep courses (Magoosh, Manhattan Prep, etc.) offer practice tests as part of their programs. These are browser-based and work on Macs.
In short, look for "TOEFL iBT practice test" and focus on whether the platform is web-based (browser compatible) or lists macOS compatibility if it's a downloadable program. There's no special "Mac version" needed.