Viewing Storyline Offline

I would like to publish a course in which I can save it to my FTP site and email a link to users. I would like them to be able to complete the course either online or offline on their computers or on their iPads. I have been publishing as HTML5 with Flash backup and AMP enabled. I then have sent the story.html link to users. Everything works fine except they don't get an option to save and view offline. The only way I have gotten it to work is to send users the amplaunch.html link. This works if they are on their iPad but doesn't work on computers and I would rather not provide two links.