Users can check their messages, account and profile, research their locality, find people based on location and update their own status and whereabouts wherever they may be.
Wayn, short for Where Are You Now, said that location-based services are to be at the core of its offering and that mobile is the natural next step because it allows users to update their location and add trips on the move.
Users can also find local services when travelling and connect to other members in the same area in order to meet up or share experiences.
Matt Jerwood, director of business development at Wayn.com, said: "Our name says it all. 'Where are you now?' should be available anytime, anywhere to allow people to make the most of where they are now; whenever 'now' is, and wherever 'where' is."
Wayn said that its site was recently ranked by Nielsen Netratings as the seventh most popular site accessed from a mobile phone in the UK, despite no mobile-specific version previously being available.
Jerwood added: "Anyone coming to the site via their mobile phone will now be offered the new mobile version for a better experience."
Wayn.com operates in 193 countries and membership has grown from 45,000 users in March 2005 to over 12m today.
It has also introduced a number of offline travel service for members including travel insurance, an international global SIM card and a downloadable mobile translator in 17 different languages.
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