Twizzle is one of the best free twitter clients for iPhone. It is also the only free Twitter client for your iPhone with multiple account support, landscape tweeting, in-app web browsing, threaded conversations, and absolutely zero ads. It comes with lots of features and is completely free of cost.

Features:

• Multiple account support.
• Landscape tweeting.
• Twitpic integration to upload pictures to Twitter on the go.
• Follow your friends, mentions, and direct messages.
• Retweet, @reply, and favorite tweets. Direct message anyone that follows you.
• View anyone’s friends/followers, bio, location, recent favorites, tweets, and mentions.

Download Twizzle