Good news, I just uploaded a new version which uses the newly added feed subscription API calls.
Therefore you can now remove RSS feeds or add new ones.
Th next new thing is the usage of the ShareUI, you can now share the links for Feed Entries

For the Czech people, the app is now (partially) translated to czech (the new subscription view is missing).

The new version can be grabbed here: http://schad.es/ttrss022

@Garp: You need your own server setup for this to work, have a look at http://tt-rss.org on how to install the server software.