5 Mobile Dating Apps. by Stefani Newman Prev NEXT . 4. Grindr. Grindr is ... Grindr is free to download for the iPhone, but Grindr Xtra gives you many more features for a subscription fee each month. ... For the Blackberry and Android phones, Grindr gives you a free sevenday trial of Grindr Xtra, then switches to a per month subscription ...