I have tried it and found it to be really really good. It's a little more DIY than Heroku, but not by too much. They are moving really fast too, hiring people to focus on specific use cases (Laravel, Rails, etc.)

If you're making heavy use of Heroku addons, you'll probably miss that quite a bit.

I've tried it for a small project. It's about as easy to use as Heroku.

Fly is really good. If you go over the free tier limits by under $5 they don't charge too, which gives a bit more flexibility on hobby projects.

Have been using mogenius.com, they have a pretty generous free tier and lots of cloud-native features

It has potential, the VMM is a bit Rusty...

Ok, that was terrible.

my apologies, seeing modern VMMs actually get used for once always hits different.

OK, but if you do it again we're converting to QEMU.

from Fly.io to Bye.io in one simple trick..