Take Payment for virtual sessions on mental health

I have a iOS application that provides virtual sessions on mental health. In order to book a session i need a payment gateway to get paid. Please provide me A CONFIRMATION if i can use apple pay directly via stripe to do the same. Also if someone suggest IAP for this then the final amount will be custom amount which not comes under any Tier which IAP provides. can you please provide solution on this complete cases.

Take Payment for virtual sessions on mental health
 
 
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