InApp buys content compatibility on multiple mobile platforms (IOS and Android)

I have developed an application on both platforms. Multiple users can see each other online when using the application at the same time

User a using iPhone can see that user B uses Android in the same application

Now I want to add another gift giving function based on some occasions

So, can I buy digital content (such as smiley face icons, cards, etc.) through the app purchase process of the iPhone app, and then give it to user B who actually uses the android app?

The reverse should also be the case where user B (Android) buys digital content and sends it to user a (iPhone)

Note: I know that in app purchase on the same platform is not a problem, which means that if all users use iPhone or Android, it is not a problem. But as far as I am concerned, I have two different platforms

Any ideas?

resolvent:

Basically, no, you can't cross buy items between IOS and Android. However, another way is to realize the possibility of buying "credit" in the Android / IOS store. Then implement and host your own DRM service, and your users can use / give credit