Tombo Edit is an Android application to view and edit files encrypted by Tombo (http://tombo.sourceforge.jp/En/)
It is best to be used with DropBox (http://www.dropbox.com):
1. Create a DropBox account (it is free for up to 2gb).
2. On your desktop/laptop move Tombo root folder into your dropbox folder, so it gets synchronized across machines.
3. On your Android device install Dropbox client.
On your Android device use Dropbox to navigate to Tombo root folder.
Selecting encrypted Tombo file (with .chi extension) should bring Tombo Edit, which will prompt you for password.
Currently Tombo Edit only provides read-only view (the Edit part is coming in next version).