They are Tinder emulators for PC.
They use the name Tinder but they are fake!
like:
http://ift.tt/2ny7740
http://ift.tt/2ob2XSA
http://tinderpc.com/
http://ift.tt/2ny9DqV
The real Tinder for desktop is
http://ift.tt/10Q8eOq
http://ift.tt/2nydVyy
Perhaps Tinder will launch its desktop web mainly to fight back those fake webs pretending to be the real Tinder.
Tinder Launching (or Updating) A Web Version Of Its Dating Platform
http://ift.tt/2o4N1RA
Please also notice:
The future of mobile is desktop!
http://ift.tt/2lrhNlK
UKOM Digital Market Overview - December 2016
http://ift.tt/2l6xCf6
http://ift.tt/2lEypXQ
74% of adults are multi-platform but this is lower among social class A, who are more likely to only use the desktop and social class E who are more likely to only use a mobile. 1 in 10 adults are now mobile only but this is higher among females (12%) than males (7%).