GravityStripe

GravityStripe takes the Gravity Forms + Stripe Add-on subscription functionality to a whole new level. With GravityStripe, subscribers can manage their own subscriptions easily with just a few clicks.

GravityStripe Basic comes with the ability to add a shortcode to a page so subscribers can see details about their subscriptions. It also allows users to cancel their subscriptions on their own.
GravityStripe Pro extends the basic features by integrating directly with the Stripe portal.

Subscribers can update or add credit card information, upgrade/downgrade/cancel their subscriptions, and more. It also gives the admin control over automatic refunds, cancelation terms, and other features that turn your subscription form into a full-fledged subscription management tool.