BillSplitReceipt: Smart Group Expense Auditor
Automatically detects itemization errors and dishonest splits when friends share meal/bar receipts, preventing payment disputes before they happen.
The Problem
When groups split bills, someone inevitably gets the math wrong, forgets to include tax/tip, or deliberately obscures costs. Everyone pulls out their phones arguing about who owes what, and no tool actually validates if the proposed split is mathematically honest or flags suspicious patterns like someone always ordering expensive items but splitting evenly.
Target Audience
20-35 year olds who regularly split bills at restaurants/bars/trips, roommates splitting household expenses, travel groups splitting Airbnb costs
Why Now?
Claude Vision makes receipt parsing viable for solo builders; group travel and shared living post-pandemic created tension around fairness; Venmo lacks dispute resolution
What's Missing
Existing apps assume people input splits honestly and just track who paid whom. No app validates receipts against proposed splits or flags patterns (like one person always ordering $40 steaks on a $20/person split).
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