When you download one of our products, whether you are downloading the full version or the upgrade, you do not need to have any previous versions of ON1 software installed on your machine.
You can install the latest version of your software from the ⭐ Product Downloads for ON1 Owners page.
We provide you the full installer for the application, which includes both the standalone application and the plug-in files for Adobe Lightroom, Photoshop, and Apple Photos.
Also, any new version will install side-by-side with any previously installed versions (for example, ON1 Photo RAW 2018 installs side-by-side with ON1 Photo RAW 2019). Installing a new version will not override your old version(s). You have the choice to keep or remove any previous versions during the installation process.