Her has been a completely free app for over a year and all of the features that have always been free, will always remain free. You can always Like, Match and Message HER members for free. You can read, post and comment on the Feed, view the Events, share and Like content, all still for free.
HER Premium is only there for people that want to boost their experience. Add that bit extra that they don't need, but really want. It is completely optional and HER will always work for our community without paying a dollar.