Below are some goals and solutions for giving away access to paid plans.
Give free access for a while.
Create a limited-time coupon and ask them to upgrade onsite.
Give free access forever + collect a credit card.
Give the customer a coupon and ask them to upgrade onsite.
Give free access forever + do not collect credit card.
Create a free plan on Memberstack. Manually assign the member to the plan.
Lastly, if you don’t want the subscription to appear in your Stripe dashboard then I recommend a free plan on Memberstack