For security reasons, your phone / electronic device may not download the "Hear Mark" app until you allow it to do so. If needed, go into the "SETTINGS" app on your phone / device to approve the download, and it will complete loading onto your phone / device. Once downloaded, your app can be moved / dragged onto your screen where desired. Remember that when you select a message to listen to, there may be delay as the audio file is downloaded. Wait until the download is complete, and you will be ready to listen!