I am a copywriter. I shipped a booking app and understood every decision in it

A diary of forty minutes of questions, fifteen prompts, and the two moments I would have quit without a plan.

I do not write code. Three weeks ago I shipped a working booking app, and — this is the part that surprised me — I understood every decision inside it.

The pattern we kept seeing

The first screen is always the easy part. What separates the products that ship from the ones that stall at seventy percent is whether the hard decisions were made before the prompts started — auth before billing, the data model before the features.

We wrote this down because we kept giving the same advice. Decide the shape, then let the builder fill it in. The order is the product.

What we changed

Once the plan is explicit, every later prompt inherits it. Nothing drifts, nothing contradicts prompt three by prompt eleven, and when a decision changes the affected prompts are flagged — never silently rewritten.