DataViewer is only compatible with Windows based operating systems. The software can be downloaded at http://breas.us/cpap-user-guides-and-software/ Under the tab Software Downloads, click on Download DataViewer. Open the folder attached and double click on “HDM Data-Viewer-2.0.0-2.2”. Then click “HDM-Data-Viewer-v2_0_0_2-Setup”. A message will then pop up named “Compressed (zipped) Folders” and you will need to click on the button that reads “Extract all”. After that another message will pop up reading “Select a Destination and Extract Files”. Once you see that please click on the button that reads “Extract”. A folder will pop up again and you will need to double click on “HDM Data-Viewer-2.0.0-2.2”. You will then proceed to click on “HDM-Data-Viewer-v2_0_0_2-Setup”. From there a message will pop up and will read “Welcome to Install Shield Wizard for Human Design Medical Data Viewer” and you will need to click the “next” button. After that click on the Modify circle and continue hitting the “next” button until it reads “ready to modify the program” and click on the “install” button that is bordered with blue. Click the button that reads “Finish” which is outline in a blue color. The program should upload directly to your desktop and will read “HDM Data Viewer” and will look like a calendar with a bar graph on it with a red line across the top. If you use a Macintosh computer, you will need a Windows operating utility such as Parallels or Bootcamp. These are two programs that can be purchased at: https://www.parallels.com https://support.apple.com/boot-camp If you have further questions, please do not hesitate to contact us at 855-436-8724