The focus booster desktop timer is fully functional on Windows 7, 8 and 10.
The Mac desktop pomodoro timer will work on OS X 10.8 and up.
We have moved to a platform that now supports Linux so we will be rolling out a version when we can. If you want to receive notice of it going live, please send an email using the contact links on this page.
If you're experiencing issues with the focus booster desktop timer, please contact us using the links on this page. If your operating system isn't supported, you can try the focus booster web app.