db48x

I'm not sure how you draw the conclusion that there is no covered app store. Are you sure https://github.com/c3d/db48x/tree/dev/library is not covered, for example? More importantly, are you willing to indemnify me if some lawyer decides to argue that this projects falls under the law and that I should pay $7500 per child using it?

No, I am not ignoring the GPLv3. This is not a license, but a legal notice that residents of these states, by applying the GPL and freely running software that may violate local laws, are the ones that may have to deal with the consequences. I clarified in a recently updated version of the text, and I refer the readers to this discussion. https://github.com/c3d/db48x/blob/dev/LEGAL-NOTICE.md

This is a valid point, and I was aware of it, though the wording was not clear enough. So I clarified in a recent commit. I also added Brazil and New. https://github.com/c3d/db48x/blob/dev/LEGAL-NOTICE.md

DB48x certainly has a GitHub site with freely downloadable pieces of software that can run on the calculator. For instance here: https://github.com/c3d/db48x/tree/stable/library Some of these include contributions from third parties. The problem is that the law is written without a precise enough wording that would ensure that there is no risk whatsoever for me. And the penalty is stiff, something like $7500 per child using the software. As for mandating age verification, it's unclear to me how you think that it's possible to deliver an API giving age bracket info (in the case of DB48x, the idiomatic way would be an RPL command that returns that info) without having a facility to enter age or date of birth or something like that. So yes, everyone who reads the text interprets it as mandating age verification.

https://github.com/c3d/db48x > The DB48X project intends to rebuild and improve the user experience of the HP48 family of calculators They just updated their license to exclude California residents. The law is so vague there is a possibility to apply it against the project, per project team.