There are free alternatives to Instapaper but none look as good or work quite as well.
Platform: iPad, iPhone
Save web pages for later offline reading, optimized for readability on your iPhone or iPod touch's screen. Featured by Apple and critically acclaimed by top blogs, newspapers, and magazines!
Great for long articles and blog posts that you find during the day and would like to read, but don't have the time when you find them. Save with Instapaper, then read later when you're commuting, in a meeting, or waiting in line.
Need something to read? You can browse articles that your friends posted on Facebook, Twitter, or Tumblr. Or browse the Editor's Picks, curated by hand from the Instapaper community's most-saved stories.
Sending to Instapaper is supported by over 150 other iPhone and iPad apps! You can even send long emails to Instapaper to read later.
The latest version is redesigned for iOS 7.