Iphone and Android dating apps such as ) have become increasingly popular.

Amongst other functions, they allow users to explore potential love interests based on one’s location.

First-quarter revenue more than doubled to .2 million, which is less than the .6 million COE spent on sales and marketing.The sales and marketing staff increased to 1,936 at the end of the first quarter from 736 in December 2014. is in direct contrast to many of its Chinese tech peers.Costs are tied to telemarketing, free trial lessons, mobile marketing and branding, according to the company's prospectus. About three dozen Chinese-listed companies received offers to go private last year, according to Fact Set, but only five of them were completed.Launched in August 2011, Momo allows members to upload their personal information, including pictures, age, height and weight, into their accounts.As the app locates the positions of all the user members, once an app user refreshes his latest place, he is able to see a list of other users who are wandering around.BEIJING—In China, where Internet users often expect freebies, individual members of an online dating service are exchanging dozens of love notes every day at 30 cents a pop. Online dating is "quite fun," said Nick Yuan, a 34-year-old computer technician from Shaoxing, China, who signed up for International Ltd.