You have no tests. Here's what breaks first.

You asked for a feature, the AI wrote it, you clicked it, it worked. You did that forty times and now there's an app. At no point did anyone write a test — and why would they? Everything was working.

An automated test is just a small piece of code that uses your app the way a user would and checks that the result is what it should be. It doesn't make the app better today. It stops it from getting worse tomorrow.

The day the bill arrives

Nothing breaks while you don't touch it. The trouble starts with the first change after launch — a new signup field, a pricing tweak, a bug fix. You test the screen you changed, it looks great, you ship.

What breaks is something else: the discount code, the confirmation email, the end-of-month report. Things you never opened, because you had no reason to. And you find out when a customer complains — if they bother to.

Why AI doesn't solve this by itself

AI writes what you ask for, and you asked for the feature. Worse: when it writes tests unsupervised, it tends to write tests that confirm what the code currently does — bugs included. A test that blesses the wrong behaviour is worse than no test, because it hands you false confidence.

You don't need to test everything

Nobody needs "full coverage", and we don't recommend chasing it. What removes 90% of the pain is covering the paths where losing hurts:

• Signup and login — if this breaks, nobody gets in.
• Payment — if this breaks, you lose money quietly.
• Creating and saving your app's main thing — the order, the project, the post.
• Permission rules — user A must never see user B's data.

Half a dozen tests over those paths, running automatically on every change, already changes the game: the breakage shows up before the deploy, not in the support inbox.

The invisible payoff

The real benefit isn't catching bugs. It's being able to change the app without fear. With no tests, every change is a gamble, and the correct instinct becomes to touch nothing — which is how products die slowly.

If you want to know what's unprotected today, we'll read the code and tell you which paths are running without a safety net.