California reserachers have discovered a higher rate of incidence of sexually-transmitted infections (STIs) amongst men who regularly used hook up apps such as Grindr and Scruff.
The results were gathered from a survey conducted between 2011 and 2013 and gathered information from 7200 gay and bisexual men.
Those who took part were screened for STIs and questioned about their use of drugs and social networking in sexual encounters.
Of those who participated, 34 per cent met sexual partners in person only, while 30 per cent used a combination of person-to-person encounters and online dating.
By comparison, 36 percent used hook-up apps, either alone or in conjunction with other methods.
The men surveyed who used hook-up apps were 23 percent likelier to be infected with gonorrhoea and 35 per cent likelier to have chlamydia than those who met their partners online or in clubs and bars.
But there was no difference between the three groups in the risk for the HIV virus or syphilis.
Those who used hook-up apps were predominantly aged below 40 and well educated. The survey also suggested they were predominantly from Caucasian or Asian backgrounds and likelier to use cocaine and ecstasy as "recreational" drugs.
The researchers acknowledged the results were only accurate for the Southern Califoria region and may not reflect the same results in different areas of the world.
Previous research had found that app users were less likely to use condoms during sex and more likely to have multiple partners.
Last year Grindr reported six million users in 192 countries.