About
Haan Harn — group expenses, from bills to settlement.
Haan Harn helps groups manage shared expenses end to end: create a group and event, choose event participants, record bills and who paid or shared them, then review who owes whom.
What you can do
Organize people in a group and join with an invite code; LINE sign-in is not required to get started.
Create a trip or activity inside a group and choose which members participate in each event.
Track upfront payers and bill participants, with optional item details for a more specific breakdown.
The app calculates what each person paid and owes, then nets it into transfers whose status can be tracked.
How Haan Harn works
Groups organize members; events define who participates and which bills belong together. When it is time to settle, the app derives each person's paid and owed amounts from the bills, then nets them into transfers. The per-person ledger is generated by the system, not entered as a separate bill.
Participation and bill-management access follow group and event permissions. Settlement verification is a separate action; group membership alone does not grant permission to verify a transfer.
You can get started with a guest profile without signing in with LINE. Guest identity is intended for use within a group; account linking or carrying that identity across groups is not implied.