How to update recurring application charge and is it charge updated amount on next billing cycle?

Shopify Partner
9 0 1

Hello All,


I am applying a recurring application charge in my one App. I want it to charge $10 when the app is installed with 7 days trial period. After 7 days completion and after 15 days of usage I want to upgrade charge to $15. 


How is it possible? Should I use a capped amount of an active recurring application charge


Also, one major question after updating a recurring, will it charge $25 on every 30 days recurring cycle?