Why AI-built apps break in week three (and how to stop it)

Almost every AI app builder nails the first version. You describe an app, and minutes later something real is on screen. The gap shows up later. You ask for one change, then another, and somewhere around week three the thing that worked last week doesn't anymore.

Generation is easy, iteration is where it breaks

The demo is the easy part. A single prompt into a fresh project rarely disappoints. The hard part is the tenth change on top of a codebase that already exists, where a small edit quietly breaks a flow you finished two weeks ago. Most tools generate confidently and never check whether the last change still holds. You find out when a user does.

The first version is a party trick. The tenth change is the actual product.

A review loop that runs on every change

In pondas, a change is not done when the code compiles. After each edit, a separate agent re-runs the real flows - the ones that already worked - and reports anything that broke. A producer and a reviewer loop until it holds, within a set number of rounds, so a fix for one thing doesn't silently ship a break in another.

That is the difference between an app that demos well and one you can keep changing. You still touch no terminal, the app still lives at a public URL, and the code is still in your own repo. The part that usually rots, week-three reliability, is the part a second agent is watching.