Looking for a GUI Subversion client for iOS
Excuse me for not answering your question, but IMHO it's better and more robust to follow the development via web, not via app.

You should be able to read the whole repository via http/https if your SVN is hosted via the apache svn module.

Another great way to monitor changes is to use some web-based frontend, which follows repository changes. A great tool (which I use and recommend) is Trac.