Honestly and the claims seem to be getting shorter and shorter all the time. First it was "we built this in a month," then a week, and on to just a weekend.

Recently people have been saying they built the entire app in a single "hackathon" (basically one day).

If you really look at almost all of these claims they're false. Often times people would have built three similar apps and for their "new" one they just combine elements of the three and call it done.