The developers don't endorse 3rd party utilities or apps that work with 7 Days to Die but neither do they hunt them down and close them down. Sphereii's mod launcher is a godsend for those who want to try out mods but feel timid about downloading and installing them themselves. There are server admin bots that help the multiplayer experience with 7 Days to Die. There are web based mapping utilities that keep track of your world as it is uncovered. Heck, there's probably at least one mobile app designed to work with 7 Days. Just as the developers don't endorse but also don't try to shut down these 3rd party utilities, they'll treat this build planning utility the same.
Crater Creator has already stated that since the utility is related to the game, is of interest to people who like to build in this game, and is contained within its own thread and not being reposted in threads all over the forum-- it is appropriate to allow it. It's not spam.
I don't think this will start a flood of links to 3rd party products because there can't be that many out there that are directly related to 7 Days to Die to ever reach flood levels. But rest assured, we know the signs of what to look for. If a link takes us to a site selling graphics cards we will be able to figure out to delete that one and deal with the poster. If a link takes us to a page where someone has created a chart showing all possible quests and which trader is likely to offer them and what the rewards are likely to be then we will be able to grok that as something that is OKAY.
devtrackers.gg