Echofon Pro was formerly named 'TwitterFon Pro'.

Echofon Pro is the ideal Twitter app for serious Twitter users. It is an easy to use, super-fast Twitter app for the iPhone and iPod Touch. It let's you carry out the standard Twitter features, plus much more.

Pro Features:
- Multiple Accounts
- Push notifications when you are mentioned in a tweet, or are sent a direct message.
- Unread tweets sync with Echofon for Firefox.
- Photo upload to Flickr
- Landscape Keyboard
- Instapaper integration
- User-authenticated bit.ly
- Shake to reload (optional)
- Multiple color themes

Plus the following standard features:
- Twitter search and trends
- In-App web, maps, mail, YouTube and full-screen photo viewing
- Photo and video upload with twitpic.com and twitvid.com
- Preview shortened URLs
- User lookup
- Support for hashtags and stock symbols
- Conversation view
- Rich text timeline view
- Read It Later integration