Grapher and Grapher Preview are two separate builds, so you can have them both installed simultaneously. Both will be available to download from My Account for active maintenance users, so you can switch back to using Grapher by doing the following:
- Follow these instructions to download the Grapher installer from My Account.
- Run the installer.
- If you get a dialog asking if you want to remove or repair the installation, you already have Grapher installed, so you can cancel the install. If you do not see this dialog, continue to click through the prompts to install Grapher.
Grapher uses the same product key as Grapher Preview, so you should not be prompted to activate the license, you should just be able to begin using the software as soon as the installation is complete.
Updated October 15, 2018