I'm using catch.com for text snippets I need to have both on my computer and on my Android phone. So I wouldn't have a use for your app I think.
Suggestion: I could imagine to use an app that gives me a few new words to learn in a foreign language every day. Perhaps with a feature that tests previous days words when I log on to check what is new.
catch.com seems to be similar to Evernote or SimpleNote.
My app intends to be a dictionary-integrated word list for words that you discover and want to remember, not a note syncing app. So you might eventually find it useful.
That said, "words of the day" is an interesting feature (although it isn't on my roadmap for v0.1).
Suggestion: I could imagine to use an app that gives me a few new words to learn in a foreign language every day. Perhaps with a feature that tests previous days words when I log on to check what is new.