Specifically, “Endorsement, trademarks, and agency logos You cannot use government materials in a way that implies endorsement by a government agency, official, or employee. For example, using a photo in your advertisement of a government official wearing or using your product is not permitted. You also cannot use federal government trademarks or federal government agency logos without permission. For example, in general, you cannot use an agency logo or trademark on your social media page to suggest endorsement or sponsorship by the agency.”
NOAA does have a licensing program, but I somehow doubt that this app was part of that program. Assuming that’s true, then this is likely a case of poor enforcement.
Seems crazy that, say, an outdoor clothes retailer couldn't share a photo of a group trek where the park ranger was wearing its gear. Or that SpaceX couldn't publish a photo of NASA astronauts flying in its spacecraft - even with NASA's permission.
SpaceX can use the photos as such for factual reporting, which usually ends up being marketing for them indirectly. That is allowed. If SpaceX were to market themselves actively as having government ties, that would not be allowed.
In a similar vein, I notice most startups using government logos in their marketing. That is also not allowed - even if the agency is using your software. You are not allowed to display those logos, except for "factual marketing" - say, a white paper on the government agency using your software. Even mentioning something on the lines of "DOD improved its purchasing efficiency by 10x (heh!)" is forbidden explicitly.
I'm not sure about most of the agencies themselves, but the FDA is very strict about enforcing this rule and has often fined Big Pharma for this infraction many times.
> You cannot use government materials in a way that implies endorsement by a government agency, official, or employee. For example, using a photo in your advertisement of a government official wearing or using your product is not permitted.
No exemption made for photos where the government official really did use your cowboy hat or starship! No exception for situations where the government really did endorse you as a service provider of rugged outdoor clothing, or manned space missions.
After all, if the situation was just "you aren't allowed to fraudulently claim the government used or endorsed your product, when they did no such thing" it would barely need mentioning.
Anyway, if this is remotely relevant, get a lawyer and ask the agency in question since they’ll likely have some nuances.
https://shaungallagher.pressbin.com/blog/nasa-vsvn.html
I was baffled, because I assumed that any government-created content was public domain by default. But agency marks are a big exception to that.
This post goes into detail about the law about government agencies' logos and "fair use" arguments.