Kariwari: Estimate, Then Split

"We haven't booked the hotel, so we don't know the cost yet" — and yet the bill-splitting conversation has already started. Kariwari is a bill-splitting app that lets you include unconfirmed costs as estimates. Replace them with actual amounts once they're set, and Kariwari works out who pays whom. ■ Made for ・Planning a trip: hotel and train are still tentative, but you want to know the cost per person ・Group dinners and events where the organizer's advance payments and upcoming costs get tangled ・That "probably about ¥10,000 each" that never turns into a real settlement ■ How Kariwari thinks Costs are managed in two stages. ・Tentative (estimated): not yet booked or paid. Share a rough estimate ・Confirmed: paid. Record the actual amount and who paid Tentative costs feed the "estimated per person" figure. Only confirmed costs go into the settlement. Rough numbers and real numbers never…