Apple has apparently recently tweaked the App Store system, and now does not allow users who downloaded apps using a developer’s promo code to leave a review or rating in the iTunes store.
While this change comes as an unexpected move to some, I am not surprised, as it was probably done to prevent developers from “bribing” users to give good reviews for their app with a free code. Further, the promo-code redemptions really don’t count as regular purchase anyway.
Here is a quote from an iTunes Store representative verifying this:
Hi,
Anand here again from iTunes Store Customer Support. Thanks for writing back and letting me know your concern. I understand that you are still not able to write a review. I know how disappointing it can be when things don\’t work out the way they should.
I am sorry to inform that it is no longer possible to rate or review an app if it was downloaded using a developer’s promotional code.
However, I took the liberty of submitting your feedback to Apple on your behalf. Please know that Apple takes the feedback from our customers very seriously. This is the reason for our feedback page – to create a forum where our users can vent, praise or share whatever feelings they have to allow us to meet your needs, and grow as a company. I suggest that you use the link in order to share your feedback with us. I would also encourage you to share this link with all of your friends and family who wish to submit the feedback, and have them all submit the same request.
It is no longer possible to rate or review an app if it was downloaded using a developer’s promotional code.
You can review this app by purchasing it on a different iTunes account using something other than a developer’s promotional code, such as a Gift Card, Gift Certificate, or other payment options.
This follows reports that Apple tweaked its App Store algorithm to better promote apps based on ratings and active usage rather than raw download numbers. Previous to the change, it was a common occurrence for developers to give our promo codes, hoping that customers would leave a positive review. Coercing a review seems like a bid idea to me, and apparently, Apple agrees.