How can I sign up for the Radinn App? Fredrik Ardmar May 29, 2020 11:39 Updated You can sign up with your Google & Facebook Account or with your Email. Related articles How do I connect my jetboard to the Radinn App? What features can I use in the App? Where can I download the Radinn App? How do I dispose of non-working boards/jetpacks/batteries? The battery is not charging even though it is connected properly. Comments 0 comments Please sign in to leave a comment.