Ask HN: Recommend a simple (& free) solution for tracking feature request votes?

I just want a SIMPLE tool/service/solution that lets my users vote for and submit feature requests. There are tons of overly complicated and overly priced solutions for this. I just want something simple and free. Does it exist?

The closest I've found is wantoo.io, but their admin dashboard broke after 5 minutes of me using it, and they said "it will not be fixed very soon"... great... Any suggestions? Otherwise I guess I'll have to roll my own.