Maybe experience is not the right term; "offering" would probably be better (or "more managed experience"). Although some people are perfectly happy with what Fly offers, it's probably less accessible to some others -and they hence do not use it.
imo Fly targets more techy users than Koyeb. For example, to setup continuous deployments, you are expected to setup a Github Action (https://fly.io/docs/app-guides/continuous-deployment-with-gi...). If you know what you are doing, it's fine. We want to provide a more managed experience by embedding this kind of capabilities in the platform.
So I would say that Fly is more flexible while we are more accessible
