Want to listen to smart, engaging podcasts without having to sift through a zillion shows and stations to find something you like? Then download Swell, a free iOS app serving up fresh, timely, curated content based on your preferences. In addition to using expert ratings and Swell community feedback on everything from NPR broadcasts to comedy shows to TED Talks, the app employs an advanced algorithm (based on what you listen to and/or skip) to determine what kind of content you like. So, the more you listen, the smarter it gets. We have to say: It’s a pretty swell way to stay tuned in. Free, www.swell.am