How to you plan monetization for young app

The app that I have built, currently has 150 users. I have gotten a strong signal that users are loving it. I know that my task is now to get it more visible. I am facing a dilemma, give the app is new. Should I try

- No credit card at sign-up as the app is new and then instantly hit a paywall, OR

- Start at free trial and then let users cancel.

I know I can A/B test it but I am more curious to know how you all are approaching this. Currently I kept the app free to get more users