Very addictive! Worth its money. Great purchase!
With the Wahoo KICKR Core you can train very well on your own for whatever challenge you are facing. With the right app (vb Rouvy) you build fitness or increase your FTP. With a session of 1 hour to an hour and a half, you sometimes have more progress than 3 or 4 hours on the road bike.
ZWIFT is the perfect companion for winter training with structured programs. The magnetic resistance simulates the difference in altitude perfectly - you'll feel like you're there!