Creative Cloud members with a paid plan can remove Adobe Spark branding from their Post, Page, and Video creations. To do this, simply click on the “Remove Adobe Spark branding” option in the Share menu, as shown here.
Not yet a Creative Cloud paid member? For a limited time, we're offering a free sneak peek of this ability, and you'll be able to remove branding from content you publish from now until the end of the year. After that time, if you publish or republish content, the Adobe Spark branding will reappear.
Important: At this time the ability to remove branding is only available in the Adobe Spark web app. We will be adding this functionality to the iOS apps in the future. In the meantime, if you need to remove branding from Spark projects created on your iOS device, just open the same project in the Spark web app and share from there.