Navigate to <https://mobile.leanafywms.com> from your mobile browser.
Enter the credentials and click on the "Submit" button.
Click on the "Kebab Menu".
Click on the "Add to Home Screen" or "Install app".
The installation will start, wait until the status changes to "App installed" in the Notification panel.
Tap on the Leanafy icon to Open Leanafy Mobile PWA.