It's a sad day; today, Heroku announced that they stop their free offer. No more free plans... So here are the top 3 Heroku alternatives with a generous free tier that you can use https://www.qovery.com/blog/heroku-discontinue-their-free-tier---what-are-the-top-3-best-alternatives
Hope it helps
Hey! We're familiar with this space since our product adds a collaboration layer on top of preview environments. We collected our notes on a bunch of good Heroku Alternatives to consider. You can check it out here - https://livecycle.io/blogs/complete-list-of-heroku-alternatives/. Hope it's valuable.
Smart move. Free isn't sustainable. Plus, after acquisition you know that's gonna happen.