Proper attribution shall be made and/or displayed in a clear and visible way. In case your recorded beat is used in a sound recording, the attribution shall be displayed in the written information about the recording. In case your recorded beat is the background music of a video, attribution shall be made at the end of the video and/or in the written information displayed about the video, like the following:
This video features music created using Groovepad. Available on Google Play, https://play.google.com/store/apps/details?id=com.easybrain.make.music