I did read the guidelines before posting and I honestly don't know how to quantify what is spam.

I don't believe it's spam since there are new two features, OpenZones and hurricane tracks, that are interesting and useful to people, especially with the hurricane. I'm quite proud of these developments. The OpenZones meet public good while still having a way to cover costs. The hurricane tracks visualization is new and unique and addresses the problem highlighted in the "Misinterpreting hurricane forecasts"[0]. I believe these are appropriate for "Show HN".

I have many other ideas to develop for Flowx, it would be sad if they could not be shown here because it's in a product.

BTW, the guidelines say this about spam: "Please don't complain that a submission is inappropriate. If a story is spam or off-topic, flag it. Don't feed egregious comments by replying; flag them instead. If you flag, please don't also comment that you did."

[0] https://news.ycombinator.com/item?id=20833030

It's informational, for the free version of the app, and you have to click on it to read it. Spam is a term for unsolicited commercial messages sent indiscriminately. Still marketing arguably, but then so is a lot of things that get posted to HN.

Thanks. I was going through my memory of previous "Show HN" posts I've read and many are products.

If it's any consolation, we don't have a marketing department or budget :-)

Because OP is showing something that he's made, and that's exactly what Show HN is for.

Exactly, the post is absolutely fine. Also, Duane is acting in good spirit.