Happn is an app which allows you to find the people you have crossed paths with in real life.It scans people with whom you have crossed paths with in a radius of 500 meter-1 km which is quite small.
The problem with the app is that a lot of fake profiles are shown to you.So there is a chance that the person with whom you are talking to might be fake or unexistable.Most of the people whom you find attractive won’t be on happn because of the bad recognition of the app.I personally think inorder to make friends of to find a partner one should focus more socially in real life rather than on internet dating apps.Through real life contact, one can know the personal well before enterting into a relationship.While these app made friendship/relationship won’t last long.
In Conclusion, Happn is not completely trustful and is not a good way of making new friends or for finding someone special.Happn App is a NO from me.