The official Twitter for iOS app has been updated with a new way to better filter search results, hopefully to get you closer to what you want, faster. Esteban Kozak writes on the Twitter blog:
If you want to see great photos, use the new photo search filter to see Tweets with photos in a grid or list layout. To see what your friends are saying, you can filter the results to only show Tweets from the people you follow. You can even filter for videos, making it feel like you’re a part of the action on Twitter.
They're also better surfacing trends about TV shows. If you don't use Twitter yet, grab it from the App Store now. If you do, there's an update waiting for you. Let me know how you like it!