Tweetie has become my exclusive application on the iPhone for Twitter usage. Between multiple account support, saved searches, and a quick, simple interface it replaced the few other apps I had to use simultaneously to achieve all of these.
As part of the Twitter application stats I maintain over at TweetStats, I would notice Tweetie usage increasing on the weekends. My assumption is that mobile use rises on the weekends as people are not on their work computers.
As part of a potential new service offering at TweetStats (activity graphs for your app!), I decided to verify my assumption*. As you can see, there’s a definite increase in usage of Tweetie on the weekends (gray bars).
Just for comparison sake, let’s take a look at another popular mobile app, TwitterFon. We see the same characteristics, with surprisingly similar trends.
To hit the point home, here’s a graph showing TweetDeck usage (the most popular desktop client) where we see a slight decline in usage during the weekend over the prior few days. However, usage is still comparable to the beginning of the work week.
And finally, a brief comparison of Tweetie and TweetDeck and their respective usage.

*These statistics are generated using data collected at TweetStats utilizing the fantastic Gnip service and represent the large majority of updates posted on Twitter. I do not collect statistics on protected updates.