That’s not about development or sth connected with engineering, only about my erudition. Which depends on the unneeded books I have read(classic like Tolstoy, etc). But thats not about engineering or science, nor about development. Also, I guess that my app won’t be popular until I didn’t understand how to popularise my app and you don’t explain me how to do this because you don’t want to explain anything from payd content or you don’t need a concurancy for your own apps that do nothing important. Actually apps don’t do anything important, except sth to download files, browsers, maybe notes, settings in iphones but no more.