Some Android devices don't support the installation process that begins with a "Welcome" message in a box on their phone. If that's the case with your phone, use the following steps to add your Tapper app to your phone.
For guidance on the "Welcome" message installation process, click here.
Click the menu icon (three dots or squares):
Select "Add to Home screen" (4th button from bottom)
Click "Add"
Click "Add" again or touch and hold the icon.