Use case / Groceries
The cart is never 50/50.
One person pays at the till, then the "so who owes what" starts. Scan the receipt instead: everyone opens a link, taps their own items, and the shared stuff splits itself.
Only you install it — everyone else just taps the link.
WEEKLY SHOP / SCANNED
How PrismSplit splits groceries.
One flow: scan, claim, settle.
Scan the receipt
Snap the long grocery receipt. PrismSplit reads every line, tax and deposits included.
Everyone claims their items
Send one link. Each person taps what they bought; split the shared milk and bread across whoever used them.
Settle up
Balances land per person. Pay back over UPI, Venmo, or cash and mark it done.
Splitting a $140 shop equally means the person who grabbed one yogurt subsidises everyone else’s week.

One cart, one payer, three different weeks of food. The receipt knows whose is whose — PrismSplit just asks it.