I'm developing an app for lawyers and I want to charge them monthly. I've heard subscription based apps should be only for content publishers. Is that right?
closed as off topic by Daniel Lawson♦ Apr 10 '12 at 4:23
Questions on Ask Different are expected to relate to Apple hardware or software within the scope defined in the FAQ. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about closed questions here.
The guidelines are covered by NDA with Apple. You might be able to access one or both of the following pages which describe what you need to know to some degree:
Of course you can also gain access by becoming a developer. You might be able to access those pages without paying the $99 fee as long as you register as a developer with Apple.
If not, then you should find a developer and discuss your particular needs with them directly to find out if an iOS app is right for your product or service. Note that there are other ways to provide services without using the app store - such as iOS web apps - but they are limited in what hardware and capabilities they have access to on the iOS device. The latest generation iOS devices, however, are pretty fast and the difference between a native app and a web app is smaller than it used to be.
Due to the NDA you are likely to have some difficulty getting straightforward and correct answers in public forums such as this, though, so find a developer you're comfortable working with and start a conversation about your idea.