1 month for free vs 10 renders for free?

Tomorrow we are launching: Productai.photo - a professional commercial photo generator. We have two strategies in mind: 1. We give PH members a coupon for 1 month free, where they are able to try the full power of our product. Potentially is it easier to get used to (addicted) the product and also to get excited. A credit card is needed. We would notify customers about the end of the free period. 2. We give PH members 10 free shots to try the products. In this case, no credit card is needed and no coupon is needed. The downside is that generated images might be bad, and customers won't buy the product. What would you do (1) or (2)?