You don't need to build all of them and could still see which one people would buy. You could make 5 websites with some decent SEO, set up a little pitch/video for each application with a download button and see how…
You don't need to build all of them and could still see which one people would buy. You could make 5 websites with some decent SEO, set up a little pitch/video for each application with a download button and see how…