The base app price gets you the fully featured standard Universal App with support for using one Twitter account at a time on any of your Windows devices.
Tweetium Features:
– First official release on phone!
– New theme system!
– Multiple photo upload is now supported
– Added “Start at last read” option
– Connect+ is now enabled by default for all Pro users
– Many UI and layout tweaks throughout the app
– Performance improvements
– Reduced battery and bandwidth usage
– Reduced occurrences of (non-stream) rate limit errors
– More changes listed on website…– Fixed a bug which could cause the view to continuously try to load new tweets when near the top
– Fixed a bug with the CommandBar foreground color for black background with gray accent
– Fixed a bug which could cause redundant color entries to appear in the color selectors
– Fixed a problem where search box suggestions could be missing if capital letters were used– Share page now uses your last used theme
– Fixed a couple of rare error cases reported by users
– CommandBar is now slightly more opaque
– Fixed a typo in the Preferences page– Possible fix and additional logging to help track down errors reported by users
– Fixed a problem which could cause certain views to get broken after suspend/resume
– Fixed a case where last read position could be saved incorrectly for Connect and some search views
– Fixed uploading of photos when cross-posting from an alternate account
– Fixed a bug where the header accent would be misplaced after toggling the phone status bar (until restarting or changing colors)
– Fix for a case where “Loading new tweets” would appear but loading wouldn’t start until the next scroll movement
– Dropped initial view count on phone back to 20 for better performanc