I am not signing up for an account so I don't know exactly how the API works, but if I were setting up an iPhone App to work with this, I would use the rails plugin. Rails gives you JSON communication for free (IE no extra work required) http://guides.rubyonrails.org/layouts_and_rendering.html see section 2.2.9. Then use on IOS app use something like: http://code.google.com/p/json-framework/ to interact with that.
Personally, product creation is something I've always enjoyed. Still, it can be hard at times to come up with ideas for new products that are unique, or have a unique twist to them. Even an experienced and creative individual can learn a lot from this video series. I know I did. I especially appreciated the lessons on product pricing, how to get testimonials, and creating multimedia packages. Not to forget the sources for ideas, which are priceless! Once again you've knocked it out of the ballpark with this one! Thanks! - Karen Denning
Like I said, most ESP (email service providers) have the capability of creating automated email workflows. So, instead of getting an email subscriber and initially sending them one or two emails, before getting distracted and forgetting all about them, you can be sure that you have emails sent to them over the course of a few days, weeks, months etc. with email automation.
Think about implementing referral links to incentivize your subscribers to spread awareness about your brand, too. Referral links allow your current customers to promote trackable links for your business. In exchange for sending new paying customers your way, you can give them incentives like discounts, coupons, vouchers, cash, prizes or redeemable points.