Tungsyu 1.4 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X was originally created by YU BIN. Tungsyu for Mac belongs to Productivity Tools.
From the developer:
Tungsyu is a calendar for the Yangtze River. With this application, you can get the lists of Yangtze cruise ships. Also, you will find information about the cruise itineraries and specific sailing dates. Sailing schedules can be checked with ease using this cruise calendar.
You may want to check out more software for Mac, such as Tea Timer, Missing Sync for Sony PSP or TimeMachineGrowler, which might be similar to Tungsyu.