BlackBook Los Angeles
Look, even as a local, you sometimes want some professional advice about your city. Hell, even as professional city-advice-dispensers, sometimes we do too: you can't be everyone at once, after all. Luckily, there's a plethora of L.A. guidebook apps, some based off of pre-existing publications like Lonely Planet and LA Weekly, some crowdsourced like Yelp, and some
unique to the iPhone. While all of them have their advantages, we really like the BlackBook app for a few reasons: it's free, it's extremely easy to use, it's comprehensive, and the recommendations are of fairly universally high quality. And best of all, it stays up to date, which is a bigger problem in many of these guidebooks than you might think. Nobody wants to hunt down a highly-beloved hole-in-the-wall ramen joint only to discover that it's become an actual hole in an actual wall.
Free, available on iPhone and Android (LA-specific version not available on Android but general app contains LA info)