Below is a comparison chart between the different editions of fluxgain Like.

FeatureFluxgain Like LiteFluxgain Like Plus
Customise fluxgain Like buttonYesYes
Use on mobile web sitesYesYes
Periodic sync of fluxgain Likes from salesforce to fluxgain serversNoYes
Metric data for fluxgain Chatter Likes and CommentsNoYes
Reports and Dashboards for fluxgain Chatter Likes and CommentsNoYes
Allowed public internet web page hits per day where like button link/image is locatedUnlimitedUnlimited
Allowed intranet web page hits per day where static like button link/image/widget is located5000 per company1000 per user
Allowed public internet web page hits per day for where like button widget is locatedPlease contact usPlease contact us
CostFree$1 per user per month
AvailabilityOn appexchangePlease contact us

For public websites using the fluxgain link/image button (which does not display a like count) there are no usage limitations on web page hits for the websites.