Stampin' Up! now has a iPhone app! It's best explained from them, so here you go:
"It has been hard to keep this a secret-we're so excited about it! We have created a card-making application, and we already have a great name for it: Simply Sent! This iPhone app allows customers to create an e-card-from a template or completely on their own-and send it via e-mail or post it on Facebook. And it's free!
Here's something you should know about this app: it's not My Digital Studio on a mobile device, not even close. This scaled-back version will only give customers a taste of what they can create when they buy MDS. We want to get our name and our art out there so more people than ever before will know about Stampin' Up! We hope you'll get excited about it as well and that you'll do the following:
Download it from iTunes or the App Store, share it with all your friends, and post a review! The more positive reviews it gets, the more prominent place it takes in the iTunes store.
Try it out!"
For Android users, no worries, there is an app for you in the works too. I'll let you know as soon as its released!