Before computer existed, people used typewriters to write text on papers. Today, typewriters may not be seen anywhere but people recall typewriters when they see period movies like Moulin Rouge or Sherlock Holmes.
The font in which text written by a typewriter on a paper fascinates many as such paper or text looks “vintage”. That font is available in Mac or PC but it may not create that feel for you. Therefore, here is an app called “The Amazing Type Writer” with which, you can type text on your iPhone as if you are using a typewriter.