This week's apps include the new Spotify app for iPad, a new political news source, and a sharp way to browse Leonardo da Vinci's old notebooks.
Some pretty cool games got updated this week as well. Coton solves a problem you never knew you had
What kind of cloud is that? With Coton, you can identify it in no time. It uses info from the International Cloud Atlas to help people who find themselves perpetually staring at the sky.