Europe

There is fierce competition between the two biggest apps here. Tinder dominates northern countries; Badoo is top in the east and south. In German-speaking countries, Lovoo - developed in the city of Dresden - is number one.

If there's no chemistry, there's no chemistry Andy, 45, London

Andy, 45, from Scotland, lives in London and has been married and divorced twice. He has a 21-year-old daughter from his first marriage. He's been using Tinder for several years.



"You create this perfect profile, using your best photographs and most creative lines of text, to create this persona, and you start to believe this persona that you've created. Everyone else on the app is doing exactly the same thing.



"You spend a few weeks sending lines of text to each other, and you eventually arrange to meet. At the meeting, it's instantly recognisable that neither of you can live up to the expectations and you part company.



"If there's no chemistry, there's no chemistry. The fallout is the trip home, where you feel crushed and defeated and you know you're going back to square one to start the whole process again.

Duration: 0:26 Andy's "rollercoaster ride"

"To counter-balance this you tend to have three or four on the go at the same time. The whole process is very addictive, but it's very soul-destroying. The addictive part tends to come mainly from the loneliness, which is the whole reason that we're on this and we're trying to find someone to keep us company."

Outside Russia, Egypt is the only country where Frim is popular