question: introductory offer

1. We've been using flutter. We’ve been using Google Play, App store with In-App Purchase so far, and we managed our offers by adding the offer products directly there.

Now we’re trying to switch to Adapty’s makePurchase flow.

To add an offer, we selected an Introductory Offer (for new users / free trial), but we can only choose the duration — there’s no field for an Offer ID.

So does this get applied automatically without an Offer ID, or is it something that Google Play handles on its own?

2. I also created a Developer-Determined Offer because I want to test the Free Trial flow.

As far as I know, this type of offer should be available even if the user has purchase history, but it’s not being applied.

Is this considered a Promotional Offer instead?

Introductory Offer is available for playstore or only app store