Well if you are not expecting investor to take money out of his pocket (or hat) after that pitch you surely have to prepare (a) executive summary 1-2 pages (b)

Well if you are not expecting investor to take money out of his pocket (or hat) after that pitch you surely have to prepare (a) executive summary 1-2 pages (b) slides/screenshots 1 page(can be four colorful slides on it) just because this guy might want to share something with other decision makers. Of course if you dont think that after your pitch will suddenly became beter advocate for your project than yourself ))