This app was mentioned in 2 comments, with an average of 2.50 upvotes
https://itunes.apple.com/us/app/official-eli-drake-dummy-button/id1154335435?mt=8
https://play.google.com/store/apps/details?id=com.EliDrake.EDdummybuttonRevised&hl=en
> Dummy Button App
Google Play: https://play.google.com/store/apps/details?id=com.EliDrake.EDdummybuttonRevised