I should have rethought the subject line... "free but old school way to determine occupancy rates"
I use Airdna just for the overview and I have clients that pay, but when doing market research they still look at every competitor photo, every amenity, home features, reviews, and even the hosts profile before investing in a market, neighborhood, or community. So, I haven't run into an instance where we've needed to make a quick decision before having already done the due diligence.
I used Airdna 2017-2018, and at that time their customer service was terrible, there was missing data points, and didn't pull all of the competitors which is why I stick with the tactic I posted and my clients always end up in the 90th percentile of competitors.
Regardless, I agree Airdna is worth the investment even for the base subscription because of all it has to offer... Also, after hearing @James Carlson it appears that is has become far more reliable.
But I wouldn't 100% trust an analytical tool until I'm in the metaverse.