This is the 14788th most frequent Polish word.
randkowe
"Randkowe" means "dating-related" or "pertaining to dating."
In this sentence, 'randkowe' is used as an adjective, modifying 'plany' (plans) to indicate that the plans are related to dating.
Czy masz jakieś plany randkowe na weekend?
Do you have any dating plans for the weekend?
Here, 'randkowe' modifies 'aplikacje' (apps) to specify that these apps are related to dating.
Te aplikacje randkowe są bardzo popularne wśród młodych ludzi.
These dating apps are very popular among young people.
In this case, 'randkową' (a form of 'randkowe' for the proper grammatical agreement) describes 'atmosferę' (atmosphere), indicating that the atmosphere is suitable for dating.