Today, fly.io sent me an email:
Hello! You are receiving this email because you deployed an application that is not allowed in our free tier. Our free tier is intended only for web applications. Proxy servers, TOR exit nodes, and BitTorrent apps are not allowed.
These kinds of applications are allowed on our paid plans. If you want to keep using this application on Fly.io, we will automatically upgrade you to our $10/month “Advanced” plan. If you would prefer not to upgrade, you have 24 hours to delete your application before you are charged.
I found $10/month plan is not described in docs. I’m wondering what is included in it?