1. Launch Apple's Podcast app.
2. Tap the Search tab.
3. Enter the name of the podcast you want to rate or review.
4. Tap the blue Search key at the bottom right.
5. Tap the cover art for the podcast.
6. Tap the Reviews tab.
7. Tap Write a Review at the bottom.
8. Enter your iTunes password to login.
9. Tap the Stars to leave a rating.
10. Enter title text and content to leave a review.
11. Tap Send.