In an attempt to spur on adoption of AppDotNet (or ADN for short), Tapbots (iTunes App Store link) have made their ADN clients free for a limited time.
So even if you're not sure if you're ever going to use ADN, I'd recommend grabbing the apps so you have them on your Apple account. They're normally $9.99 I believe:
If you'd like to give ADN a whirl, I have 3 one month trial accounts that I can give out. No credit card required and you get a month of full ADN to experiment with. Leave a comment with your email address below if you're interested.