Originally publishing science-related apps, such as LightTrac and Moon Calendar, Rivolu recently entered the Twitter client arena with the release of TweetStream. Less than two weeks later, the app has been updated with better accessibility to content and improved search functionality.

Like any other Twitter client, TweetStream is a good tool for finding information and getting involved in discussions about sports teams, celebrities, products, etc. Although, TweetStream’s real-time reporting is especially handy for keeping up with the news, including trends, plus conversations during TV shows and live events. Even better, TweetStream now provides the option to disable screen lock, offering uninterrupted display of your tweets.

TweetStream version 1.1 (iPhone 4) - Search

Get specific with combination keywords searches or find tweets with any of the kyewords.

Obviously, your normal feed won’t contain all of this, therefore, a search is required. To help seek out those specific topics, Rivolu has made searching even better.

Entering multiple keywords with only a space as a separator results in tweets containing all of those names, terms, etc. If you want tweets mentioning any of the keywords and not necessarily all of them, add an “OR” in between. For example, if you do a search for “The Simpsons OR TheSimpsons,” you can grab any tweets talking about the show and those who’ve decided to just add the tag.

It’s important to note that the modifier appears to be case sensitive. Providing another example, searching for “AppAdvice or Macworld” had zero results, whereas “AppAdvice OR Macworld” listed tweets related to either site.

TweetStream version 1.1 (iPhone 4) - Pocket (Read It Later)

Quickly add articles to your reading list with a tap and hold on any tweet.

When you notice someone with similar interests, the next step is to view their Twitter profile for more info, right? In TweetStream v1.1, you can now view account profiles within the app. First, tap on a tweet, then tap and hold on the tweeter’s username until the screen flips over to the profile view. To display your own account details, simply tap and hold on any usernames at the top of your timeline.

So, what if you stumble across an intriguing article but don’t have time to read through it at the moment? Previously, TweetStream users had to visit the URL later using a cumbersome process of copy and paste. However TweetStream v1.1 supports submitting web pages to your Pocket, formerly Read It Later, reading list by performing a tap and hold on any tweet incorporating a web link.

Are you hoping for more? Rivolu wants to hear your requests.

Please note, TweetStream is still new and evolving. It does not currently support push notifications, lists and DM. If you like to request these features or any other, please use the feedback link in the app. We would love to hear from you. Follow us @Rivolu.

TweetStream is compatible with iPhone 4, iPhone 4S, 32GB and 64GB third generation iPod touch, fourth generation iPod touch and newer running iOS 5.0 or later, and available in the App Store for free for a very limited time. The regular $0.99 price will begin May 1, 2012.