I've been advising a friend who moved into her very first own apartment. She's in the process of trying to "make it all come together" on a budget, which of course means Craigslist is high on her list of resources. We go back and forth throughout the day with links and comments: "How does this look?", "This might be in your budget", "Ewww! No". I'm going to recommend this iOS/Android app to give her a surrogate CL buddy to help her with the ongoing hunt for the perfect coffee table...
The Mokriya app, available for both Android and iOS (free, with option for $.99 "premium" upgrade), skins the bare bones Craigslist we all know with a much improved and easier to navigate/search interface optimized for smartphones. Search by GPS-aided searches or turn to multi-city searches to throw out a wider net; apartment and house rental searches are improved visually thanks to a Google Maps integrated preview showing all the listings in the area, so you know even before looking at the description whether you want to call the address possibly your own.
Scrolling through listings is as easy as browsing a Tumblr page, with a 2-column width thumbnail preview, and those normally horrible small listing photos looked actually halfway decent on my Galaxy SIII compared to the computer monitor.
But the best features admittedly will set you back almost a whole dollar: the ability to photograph and post a sales listing right from your phone, create push notification alerts for items or rentals, and also the option to mark down favorite listings like your own personal Craigslist Pinterest. If you're a hardcore CL shopper or seller who likes to browse even while away from a computer screen, 99 cents seems worth it (if not, there's also the much ballyhooed alternative in a similar free/99 cents Pro version, Craigslist Mobile for Android users).