Heads up: Heroku is eliminating their free services, starting November 28. Staticman has long recommended Heroku for their free services, and the documentation walks users through setting up hosting on Heroku; that documentation will need to be changed.

There are a number of competitors seeking to replace Heroku in this market niche. I've looked at a number of them and my current favorite is fly.io. They have a dedicated Heroku importer which has worked pretty well for me.