I think he means from the bottom up. In other words, written from scratch.
Considering how much time and effort would be needed, and we already have LFSLapper, Aario, Prism, etc., why would anyone even want to bother, especially just for 1 user.
People asking for a "coder" probably think its like building a mock website; that with a few hours work, the coder can make the exact program required doing exactly what they asked for.
People asking for specific things they want the code to do, should try making an exact specific list (a proper design brief), with examples, including diagrams (this is likely to take hours by itself, although these same people probably think its a 2 minute job). And if they then multiply each individual item wanted by a few days worth of coding per item, they might get some idea of amount of effort required.
They're likely to offer coder 10 euros/dollars for whole project.
So if the coding project takes few months, then if
120 days effort x 8 hours per day x 1 cent per hour = 9.60 euros/dollars -see how generous they are willing to be!
In other words, to all these asking for someone to code something for them that probably doesn't yet exist - good luck
Edit: took me longer to write this than I thought - and someone beat me to it!