Moving from a paid app to in-app purchase

Hi,


My customer has a app which has been offered in the past for a $2.99 purchase without any in-app purchases. The customer would now like to change the app to be a free app with some free content and the rest of the content available as an in-app purchase.


The questions we have are:


(1) Is there any guideline as to how much of an app's content should be free compared to how much is unlocked by the in-app purchase? Is 5 or 10% enough?


(2) What becomes of the users who previously purchased the app for $2.99? Is there any way we can convert those users over to use the in-app purchase content automatically without requiring them to pay again?


Thanks,

Frank

1) is there a guideline - no. But all apps have to do something iseful.


2) people who purchased the app will get their IAP rights given to them automatically without needing to purchase it. Your app will tell the user "If you purchased this app tap here" and your code will then referesh the receipt and examine it looking for the value of "application_version". This correspods to the Build number (not the Version number!!!!). As long as you use different Build numbers for the purchased apps and the free apps you can tell them apart by the application_version. You can examine the receipt using OpenSSL or you can send the receipt to Apple servers for decoding.

Moving from a paid app to in-app purchase
 
 
Q