Build an App That Scans Receipts and Splits the Bill

You want an app that scans a receipt and splits the bill — one that handles tip and tax without a fight at the end of dinner. Instead of downloading another generic receipt scanner app to split the bill, you can build your own in Auto, shaped exactly to how you and your friends actually split.

Why build it instead of downloading one

There are plenty of bill-splitter apps out there, and some are fine. But they make assumptions: they split evenly when you wanted per-item, or they bury tip settings, or they nag you to upgrade. When you build your own Frame in Auto, you decide the rules. It’s a camera-first app — you describe what you want, snap a photo of the receipt, and Auto builds a personal mini-app around it. No code, no app store.

Build it in Auto: the quick version

1. Open Auto and describe the Frame: an AI receipt scanner and bill splitter that reads a photo of a receipt.
2. Tell it what to extract — merchant, date, itemized line items with prices, subtotal, tax, tip, and total. This is the OCR bill-splitting part; vision does the reading so you don’t type anything.
3. Ask it to store each scan as history, with a main screen listing past receipts by date.
4. Add splitting: split evenly, or assign items to specific people, and fold tax and tip into the math.
5. Snap a receipt and check the breakdown. Adjust the wording until it fits your table.

The whole thing takes minutes, and it’s yours — your layout, your split logic, your people.

How someone built theirs

One Auto user started with a single prompt: build a Frame called “Receipt Scanner” that uses LLM vision to pull structured data from receipt photos — merchant, date, line items, subtotal, tax, tip, total. They asked for a scrollable history of past receipts sorted by date, a detail screen with the full itemized breakdown, a monthly total spend banner, and a clean card layout.

The first build hit a snag — a broken client file that failed to compile — so they pasted the error straight back in and had Auto fix it. Building isn’t always one-shot, and that’s fine; you just describe the problem and keep going.

Then they layered in the actual splitting: on each receipt’s detail page, an easy way to calculate tip and split the check — evenly or by assigning items to people. They refined it so the split accounted for tax and tip too, not just the raw items. A couple of naming passes later (it briefly had a more playful name) they settled back on “Receipt Scanner.”

You can see the same idea in other Frames people have already built, like Bill Splitter — proof that a scan-receipt-split-bill app is very buildable, and that yours can look nothing like anyone else’s.

FAQ

Do I need to know how to code? No. You describe what you want in plain language and Auto builds it. When something breaks, you paste the error back in.

How does the scanning work? Auto uses LLM vision to read the receipt photo and pull out items, prices, tax, tip, and total — so it’s an OCR bill-splitting app without manual entry.

Can it split by item, not just evenly? Yes. You can build it to assign specific items to specific people, then apply tax and tip on top.

Can I change it later? Anytime. It’s your Frame — reword it, add features, or rename it whenever your needs change.