Yes, on all social walls you can upload your own logo. The Everwall logo also appears on your wall by default, however, you can optionally remove our logo branding and replace that logo with your own second logo that you can upload (or you can just remove our logo if you don't have a need for a second logo). There is a fee for this service.
In addition to uploading your own logo, you can also upload a background image, customize the colors and more. All of these design changes can be made from the Design page of the builder.