Hi Amer,
It depends on which app you need. 300+ apps are available.
Some apps run without EHP and some apps need EHP. You can find each app info in the App Catalog.
You can find UI component name in the App Catalog.
Please take a look step 1 of this.
SAP Fiori LL17 - SAP Fiori launchpad troubleshooting
Quick reference alos helps you.
SAP Fiori - Add-on quick reference for transactional apps
Regards, Masa
SAP Customer Experience Group - CEG