mobi app for pc

Hi, you probably have one by now but I would recommend the ebook reader that comes with Calibre.

You can use the main Calibre software to manage the books, but you can also ignore this an just use the reader, which is great and has lots of options.

http://calibre-ebook.com/download

Once any reader installed you can right click the mobi, choose 'Open With...' > 'Choose default program' > 'Other Programs' > [Preferred reader]

Then you can just double click to open them in future.

Also, as another option, I think Sumatra pdf is a handy piece of software, as well as mobi it also reads epubs and pdfs (and comic book files, cbz and cbr). I use it for pdfs instead of Adobe as it opens a lot more quickly and doesn't have to update itself all the time.

http://www.sumatrapdfreader.org/download-free-pdf-viewer.html