Twitter offers users no stats at all, unlike most other social media sites. You can look at your followers and your total number of tweets from your home page (timeline), and click on the @ Connect button for recent retweets and mentions. But that’s it: you can’t see whether your follower count has increased from last week or last month (unless you’re using a separate method of keeping track); you have to count to see how many tweets you posted yesterday.
Markitty’s Tweet Performance and Profile Performance graphs give you a quick glance at all of these for the last three weeks. The Tweet Performance graph compares your tweets each day with retweets you got and mentions of you by others.
Why compare tweets with retweets and mentions? Because common sense suggests that the more you tweet the more your mentions and retweets should increase (though not necessarily in the same day). If this isn’t happening, maybe you should look at the quality or relevance of your tweets.