Yes Correct Masa. Currently we have Portal in our landscape.
We built few custom UI5 applications similar to existing Portal applications and also enabled few Standard Fiori apps which meets our business requirements.
We enables these standard and custom apps in our Fiori Launchpad where our customers can login and perform all the daily activities from Mobile/Tablets instead portal.
Our employees use this Launchpad URL directly from Mobile/Tablets with Single-Sign on.
Thanks,
Vijay