Ask HN: When should I implement pricing tiers and controls for my web app?

Hi everyone,

I've finished adding the initial functionality to a web app I've been working on. It's early days and I would like to put it out there for a handful of selected users (read friends & family) to get some initial feedback. Even though I've pre-selected some friendlies to use my application and provide feedback, I don't want to prevent access to users from the wild.

Ultimately my goal for the app is to run it as a service with a subscription based, tiered pricing model. Basically, I'm not sure if I should figure out my initial pricing plans and implement the controls now or if it can wait until later.

Does anyone have any experience or advice with this?

thanks jt