And is there some loyalty programme app as well?

Yes, there is a loyalty programme app as well, please follow the below link to set up loyalty programme app:
https://www.storehippo.com/app/loyalty

To download the app in the admin panel please follow the steps:
Go to Advance Settings > StoreHippo App store > Search Loyalty > Download the App. 
https://help.storehippo.com/topic/storehippo-app-store