Pin The App To Your Android Phone
Go to the web page https://clientapp.gallowglass.com
Once the page has loaded press on the 3 dots in the top right corner
Press the Add to home screen option
Enter in a Title such as Gallowglass Client App
Press the Add button
The App will then be on your Home Screen. You may need to scroll around a bit depending on how many apps you have installed on your phone to find where the phone has pinned it but it will be there.