So i've heard, but I'm not a huge fan of having tracks people contributed sold back to us (that "free with the app" excuse is just plain bull)
I'll play the tracks I bought back in the day without paying extra, thanks
yeah, it worked well for me but the app is no longer available
however, some clone was developed and can be downloaded at https://unjammit.com
also, I heard the content was salvaged by the users so tracks should still be available
good that you mention that.
sadly, Jammit as a company went under
But there is a fully functional clone at unjammit.com (works on all devices)
also, the community backed up the whole catalog