This is a great example of an open-core business model that I hope others will follow. Make something useful for everyone, and sell additional features in a hosted version (grit.io). I actually didn't even know there was a hosted version until I clicked the outgoing links from the documentation.
I've experienced how much time these migrations take (and how error prone they are), especially once you have double-digit team sizes, so I definitely see the value proposition.
Thank you! We definitely want to give useful value to everyone.
To expand more on our business model, we see GritQL as a powerful but also relatively low-level tool. It can speed up your migration, but writing the query and generating/testing the PRs still takes considerable time.
If you'd prefer to have migrations handled entirely for you, you can pay us to tackle that work. In additional to providing the migration code, we generate pull requests and hook into your CI pipeline to fix downstream test failures. [0]
I've experienced how much time these migrations take (and how error prone they are), especially once you have double-digit team sizes, so I definitely see the value proposition.