Don't feed the troll...
uPilot won't:
Teach you how to fly a 737 as he's no 737 pilot, instructor or whatever. (Though I never asked as I never had the feeling that this could be a necessary qualification for prep)
Have the same feel as Ryanair's 737 sim
Disappoint you.
uPilot WILL:
Prepare you for the assessment even before you're in Dublin
Show you tips and tricks to make your life easier at Dublin HQ
Sharpen your CRM skills
Do a test interview with you
Pick you up from your hotel
Be a nice and friendly guy
If you've got no feeling for flying an aircraft, then uPilot's sim won't do magic.
uPilot is a - as you can see on this thread - successful PREPARATION for the interview and what to expect - not how to fly a 737. But trust me: The Ryanair sim is really easy and stable, just trim it properly - that's the whole secret.