Iphone Differentiate between lite version and full version
<p>I have developed an app for iphone. it is quiz app.
It has main topics say 5.
All topics has 20 question.
Now I want to create lite and full version.
in Lite Version, when user download app, user gets 5 question in all topics.
and in full version user can buy topic wise.
for eg there are topic 1,2,..5. user want to buy topic 2 and topic 3,
then how can i develop code for this functionality.
I know this is possible, but how that I dont know.</p>

<p>Please help in this case and suggest best solution.</p>

<p>thankyou all</p>
