I think it is showing what you are saved as in the other persons phone. There are ones where the guy presumably saved a girls number but she didn’t bother to save his and another where the girl saved him as do not answer. I think the point is so you can see how the other person views you. These are mostly joke features and the feature you mentioned is pretty standard now.
In the US several hotels will offer a “continental breakfast” included with the stay. I guess you could argue that it’s not really free, considering it’s factored into your stay at the hotel, but there is technically not a separate charge for it and it’s considered an “amenity”. I know that this is not necessarily common in other places, so I thought I would mention in case you were not aware.