Weirdly enough, both websites use this exact same quote: "This means you'll need to make an API (application programming interface). It's how all your friendly apps talk to each other."

Either plagiarism was involved, or there's some underlying library that's the same for both, or they both hired the same company to build their MVP ;)

HowMuchToMakeAnApp is by "Commite, a digital studio specialized in driving ideas from inception to launch" based out of "Seville, San Francisco & New York".

BuildMyMVP is made by "ProductDone a digital studio based in Auckland, New Zealand".

The two sites side by side: https://imgur.com/a/e7OVYVa

This is spam. There's literally nothing original or unique about this site, no accompanying details on how they made it or anything you'd usually expect on HN. The site itself is a cookie-cutter clone of dozens like it, and exists solely to upsell people to a paid service.

It's happening lots lately too. Look at the Gmail spam-tool that got to the top of the front page earlier, or any number of posts lately that are just people gaming HN's front page to get free clicks to their service.