FilteredRSS

This app is RSS reader, but different than others - it is written to fulfill another requirements. Maybe you would find it appropriate also?

Main purpose of this reader is:

• filtering RSS posts;
• notifying about selected RSS posts;
• show whole post without going to web server.

Most RSS readers show only post headers, and after clicking on it - whole post, but post retrieved from external web server. If this server requires authorization, you get logon screen, not post info. And you already have post info (from RSS feed). So, this reader, after clicking on post header in list, shows you whole description of this post from RSS feed.

FilteredRSS, as name implies, allows you to filter posts - you can enter blacklist, i.e. list of phrases that if found in post, cause post to be ignored. Unless would be found phrase from whitelist in same post.
Whitelist phrases could also make app sending you toast notification.

Settings could be stored locally on device, or in the cloud.

Warning: most RSS readers shows posts sorted by feed, this reader has no such functionality.