Most sophisticated unfollow app in the AppStore:

Clean your Twitter account:
• track new unfollowers and new followers
• find who is not follow you back
• find inactive accounts
• log your unfollow and follow action in the history section
• works with large accounts with more than 75000 followers and followings
• get notified of new unfollowers and following
• logs unfollow and follow history of a specific account
• clean & reduced app interface




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Disclaimer & Terms of Service:
1. "Unfollow Tweeps for Twitter" is not affiliated with Twitter, Inc. (twitter.com) and does not claim ownership of the Twitter trademark.
2. you using "Unfollow Tweeps for Twitter" at your own risk.
3. "Unfollow Tweeps for Twitter" is not liable to damage done to your twitter profile.