The following video is part of our "Motley Fool Conversations" series, in which Katrina Chan and Greg Robleto discuss topics across the investing world.

Apple celebrates a new milestone of 25 billion app downloads. Katrina and Greg share the top five all-time free app downloads for the iPhone and iPad, and talk about the differences between the two lists.

Greg Robleto has no positions in the stocks mentioned above. Katrina Chan has no positions in the stocks mentioned above. The Motley Fool owns shares of Apple and Amazon.com. Motley Fool newsletter services recommend Apple, Amazon.com, and Netflix. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.