Why it's great for the beach: Find your favorite songs with the search feature, build a radio station around a particular artist or song, or discover new music by checking out existing playlists. What's hot: There's a huge selection of songs, new music is introduced regularly and you can set your radio presets so your favorite tunes are always on hand. What's not: The monthly fee only allows you to listen to music, not download it. Also, if you don't have a Facebook page, you'll need to create one. How much: The app is free; users must pay $9.99 per month for the premium edition to access Spotify from their smartphones.