Yaak creator here! The commercial-use license is my best attempt at aligning incentives between me and the user, while still funding the project's future.
FYI the license terms only apply to the prebuilt binaries. You can build and run from source for any use (including commercial), for free.
Happy to answer any questions as well.
Hey! I respect your desire to monetize. And I appreciate that you're trying to make it work through monetizing the commercial side. I think that's a sensible approach.
I'm for the most part just jaded about it all because I've seen Postman and Insomnia slowly boil the frog with increased pushiness towards logins and monetization. If a project is trying to make money at all, I feel it will inevitably grapple with the same issues. Especially for the kind of product where we can have five different options for in the comments section already. But I hope you do succeed in maintaining an honourable revenue stream.