Photograph any bill and see if you're overpaying

Build photograph any bill and see if you're overpaying.

Context: Take a photo of your electricity bill, phone contract, internet plan, or insurance renewal. Get one answer: you're paying 38% more than people near you for the same thing, and here's what they pay.

Almost nobody knows whether their bills are reasonable. You signed up once, years ago, and the price crept up every renewal while the introductory deal quietly expired. Comparison sites exist, but they make you type everything in and they already know what you're looking for. This starts from the bill you already have.

The comparison is what makes it worth opening twice. Not "here are twelve tariffs" — "people in your postcode with your usage pay this on average." That number is the whole product, and it gets better with every bill anyone scans.

Two hard parts:

Bills are a mess. Every provider formats them differently, usage is buried on page three, and a photo taken in a kitchen at night is rarely clean. Reading them reliably is real work, and a wrong total makes every comparison wrong.

And the money. The obvious business is a commission when someone switches — at which point the recommendation drifts toward whoever pays most, and the product becomes an advert that pretends to be advice. That has to be decided honestly at the start, and probably stated openly on the screen.

Requirements:
- Ship the smallest version that delivers the core value above, nothing more.
- Pick a stack you can deploy in a day, and state the choice before writing code.
- Handle the empty state, the error state and the offline case explicitly.
- Pricing to build toward: Free to scan and upgrade $3/month

Start by listing the screens, then build them one at a time.