Quora app is the official application of famous question ans answer website i.e. quora.com. It performs same as the website and I like this app just because its an light app and can be useable in any kind of internet format ( 2G, 3G, 4G).
You can use this app to ask any kind of silly questions and there experts are available in this site to give proper answer against your question. I am using this app from last 1 year and till now never faced any issue. So for me its an nice app to use for any of your issue, doubts, questions or if you want to help someone by give your valuable answer.