Why do developers sign up for tools but never pay?

I’m the solo founder of Zolly, a tool that lets you generate a full app from a prompt and then visually edit it (no templates, no boilerplate).

I launched recently and got ~75 signups in the first week. People use it, generate apps, and explore the editor — but no one converts to paid.

I’m trying to understand where the gap usually is:

Is the value not clear enough?

Is “AI app builders” already a saturated / mistrusted space?

Do developers prefer DIY even if tools save time?

Or is this just expected at this early stage?

If you’ve built or used similar tools, I’d really appreciate your honest perspective on:

what would make you pay, or

what would immediately turn you off.

Not here to pitch — genuinely trying to learn before deciding whether to pivot, persist, or shut it down.

Thanks for reading.

and subscriptions are ongoing & painful

and yes the code generator space is saturated