I tried the app and it fails after the Evernote login prompt and authorization. I know my evernote credentials are correct because i have verified my ability to login from my PC. Possibly $4 down the drain, but I'll see what kind of support that app developer has.
I'm pretty amazed about the lack of traffic in this topic myself. I want to use Evernote, but I won't until i can sync them up with iOS notes. I can't be looking in two places when i want to find a note.