DAILYMAIL.CO.UK - Nov 22 - 3% of Tinder's 50M users are now aged between 45 and 54. And last generation of 'pre-internet adults', aged 35 - 44, now make up 12%. Tinder, estimated to be worth ~£1B, was founded in Sep 2012 and is now recruiting 20K new users every day. Users tend to log in 11 times a day for sessions of eight minutes.