Life & Health Β· π Global
Reverse D-day Goal Splitter
Reverse-split any goal into weekly/daily tasks with 5 presets and ICS export.
About this tool
Korean Bill Splitter handles meals, trips, and group dinners under three modes β (1) equal n-way split, (2) attendance-weighted (e.g., 1 of 3 nights), (3) itemized (who ate what) β with optional tip / VAT / coupon. A debt-simplification greedy algorithm minimizes transfers between participants (a typical 6-person dinner drops from ~15 transfers to 4β5), and Toss (supertoss://) and KakaoPay (kakaotalk://pay) deeplinks are auto-generated. Results are base64-encoded into the URL for instant KakaoTalk / QR sharing, with zero server storage β everything stays client-side.
Use cases
Scenario 1
6-person dinner equal split + Toss
Split a β©120k dinner equally among six (β©20k each) and KakaoTalk-send the Toss deeplinks for one-shot settlement.
Scenario 2
2-night trip with weighted attendance
For a β©600k 3-night trip, weight A/B/C at 3 each and D at 1; auto-split yields β©180k each for A/B/C and β©60k for D.
Scenario 3
Itemized split (steak vs. salad)
Charge the steak only to whoever ordered it and split sides / drinks as "common" so no one foots an unfair bill.
Scenario 4
Minimize transfers (6 β 4)
Greedy debt simplification collapses chains like AβBβC into a single AβC transfer.
Scenario 5
QR card share + group-chat settlement
Generate a QR card and post it in the chat β everyone sees their share at once and pays via Toss / KakaoPay.
Features
- Three split modes (equal / weighted / itemized)
- Tip / VAT / coupon discount options
- Greedy debt-simplification minimizes transfer count
- Toss / KakaoPay deeplinks auto-generated
- Share URL + QR card (encoded in query, never server-stored)
- Bilingual KR/EN UI, mobile-friendly
- In-browser only β amounts and accounts never uploaded
Frequently asked
- Q. Are calculations / shares stored on a server?
- A. No. Calculation runs in the browser; the share URL just base64-encodes participants / amounts / mode into the query string.
- Q. How are partial-stay participants handled?
- A. Use weighted mode and enter each participantβs days / weight (1β100%) β the tool uses a weighted average.
- Q. Why minimize transfer count?
- A. Collapsing AβBβC into AβC reduces mistakes, fees, and wait time β a 6-person meal typically falls from ~15 transfers to 4β5.
- Q. Do Toss / KakaoPay deeplinks really work?
- A. Yes β using the appsβ official URL schemes (supertoss://send, kakaotalk://pay). With recipient account pre-entered, amount and memo are pre-filled.
- Q. Mixed foreign-currency payments?
- A. Default is KRW. Convert any USD / JPY portion at that momentβs rate and enter as KRW β pair with the fxrate tool for the rate.
Sources / references
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How we run it / disclaimer
This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.