I have read on an article that Apple is applying a policy by which an app can’t promote selling another apps, but i dont know the exact details of this. What about a DEMO version that haves a link to the store for the full version? can this still be done?.
If anyone haves more precise information on the subject i’ll appreciate it.
You are just not allowed to offer services (in app currency or similar) for app downloads.
You won’t have a problem with a link to the pro version in a lite version.
You won’t have a problem with a “My App Store” link that shows all your apps either.
Don’t reward your users for downloading other apps and you should be good.