More than 500 crimes including murder, rape and child abuse have been linked to Tinder and Grindr
Police forces across the country have dealt with a total of 162 sexual offences linked with the two dating apps, including 63 rapes.
The figures come a month after serial killer Stephen Port was jailed on a whole life tariff for murdering four men he met through Grindr.
Liberal Democrats leader Tim Farron told the Daily Mirror he feared the true number could be 'significantly higher' and added: 'I worry that these shocking figures could just be the tip of the iceberg.
'While many people have found their perfect match through these dating apps, there are those who have became victims of horrific crimes.
'The police need to do much more than they currently are to highlight the real dangers of online dating.'
Forces recording the highest number of crimes related to the two apps are the Met Police with 98, Greater Manchester with 58 and there were 49 reported incidents in Merseyside.
The figures came from a Freedom of Information request by the Mirror, from which data sent by 31 forces suggest the problem is on the rise.
As well as a number of sexual crimes being committed on children including grooming, child sex abuse and child prostitution, theft and harassment were also reported.
Greater Manchester police dealt with 12 rapes this year alone, compared to two last year.
Chief Constable Simon Bailey, national lead for violence and public protection, told the Mirror: 'The rising popularity of online dating apps and websites has contributed to an increase in the number of recorded crimes.
'I would urge those who use online dating apps to be as security conscious as possible.'
More than 500 crimes including murder, rape and child abuse have been linked to Tinder and Grindr Gareth Davies Mailonline 31 December 2016