In App plugins free

Questions & Answers
1

In my game i need In App feature

1 .What is best Unity free In App Plugin for Android and IOS ?

2 .How to implement In App in Unity ?

3 .Any tutorial for In App?

Thanks in advance

2

I use OpenIAB plugin which works good:

https://github.com/onepf/OpenIAB/tree/master/unity_plugin