Does it cost money to download the App? Particula Help Center November 15, 2021 19:27 No, The companion App is free and can be downloaded from the Apple and Google App Stores. Related articles Can I battle using my GoCube-X? Does it come pre-charged Can I connect my GoCube-X to multiple devices? "How do I know my cube is connected to the app? " How do I charge my cube? Comments 0 comments Article is closed for comments.