How to Install on iOS To install the Booktower PWA: Open the Booktower website on your phone in Safari Login Click the "Share" button. On the latest version of Safari, you need to click the three dots next to the URL then click "Share." On older versions of Safari, the share button is located at the bottom center of the screen and looks like a box with an arrow. Scroll down and click "Add to Home Screen" Now you can use the app!