I built a subscriptions app that uses Shopify GraphQL, and now I got a requirement to have a free trial period for some subscriptions that we want to sell at my company.
Ideally I would like to have a selling plan that has the first payment at 0$, or has the first payment delayed.
You could achieve this by setting the fixed pricing policy with PRICE 0 or PERCENTAGE 100 and recurring pricing policy with PERCENTAGE 0 or FIXED AMOUNT 0.