We just launched another plugin: https://wordpress.org/plugins/manage-gravity-forms-stripe-subscriptions/

Allow your Gravity Forms subscribers to cancel their Stripe subscriptions easily. Features shortcode and back-end view.

GravityStripe Pro version: Play with both versions on our demo @ https://gformsdemo.com/gravitystripe-demo/ (just create a test entry by clicking the blue button and you’ll see everything in action)