Dating app can be rather profitable solution. Recommended features for dating apps:
Facebook or Instagram integration. Ability to get connected with pal’s pal (like the one
Hinge offers),
Effective matching algorithms (survey-based and facial recognition-based ones).
Providing possibility of entering extended bio and preferences.
Private chat.
Ability to break communication with importunate users by deleting from the list of contacts.
Anonymity for users.
Geolocation, search distance options, like in
Happn.
Viewing profiles.
Push notifications.
Advanced matching algorithms.
OKCupid did a good job here, offering detailed quiz for better understanding of person’s nature.
Well-organized search filters.
Feed: interface with swipeable images.
Policy that takes care of decent behavior (may vary depending on app’s purpose).
https://erminesoft.com/how-to-build-dating-app-like-tinder/