I have spent some time searching for free extensions for all the possible platforms and would like to share my results.
Also, I made my own in-app purchase extension for Android, as I couldn’t find a good and free one.
1. In-app Purchase for Blackberry Playbook.
There is an extension that comes with BlackBerry SDK for Adobe AIR.
API docs: http://developer.blackberry.com/air/apis/playbook/net/rim/blackberry/payment/PaymentSystem.html
2. In-app Purchase for iOS.
In-app purchase extension comes with Adobe Gaming SDK
3. In-app Purchase for Amazon Kindle.
It comes with Amazon SDK: https://developer.amazon.com/sdk/in-app-purchasing/documentation/adobe.html
4. In-app Purchase for Android.
I have found two extensions:
First is free extension from Freshplanet, but it is outdated.
Second is from Milkman for $50.
So, I have decide to make my own. 🙂
You can find it here: Adobe AIR In-app Purchase native extension for Android
Hope, it will help someone in its mobile app development.
З.Ы.: InAppPurchase ANE for Android works.
I have made it for myself, but shared (including the source code) with everyone for free.
Please be respectful, if you want me to answer your questions. Thank you.