Duo: Co-Parenting Expenses

Shared kid expenses with approvals and audit trail. Add an expense, the other parent approves or disputes it, the running balance updates. Receipts attached, history preserved, exportable for a lawyer or court.

Who paid for the after-school club? How much was the doctor visit? Who bought the winter shoes? Duo records all of it — neutrally, with proof.

Built for separated and divorced parents. Also works for any two people sharing costs who need transparent evidence — not negotiation.


WHAT DUO DOES

— Add an expense — amount, category (school, doctor, clothes, food, activities…), date, ratio (default 50/50)
— Receipt required — every expense needs at least one photo or PDF, immutable
— Approval workflow — the other parent approves, disputes, or auto-approves after a set delay
— Disputes — raise a written reason, expense stays in the record (no deletions)
— Running balance — only approved expenses count; settled balance subtracts confirmed settlements
— Settlement evidence — one parent proposes, the other confirms; the actual payment happens outside the app
— Per-case ratios — different cases can have different splits (e.g., 60/40 for one child, 50/50 for another)
— One subscription covers both parents in a shared case


PRIVACY

— Email login with a one-time code — no password to remember.
— No third-party tracking. No ads. No personal analytics.
— Documents and expenses are private — visible only to the two parents in the case.


FREE AND PREMIUM

Free:
— full evidence workflow (cases, expenses, approvals, disputes, settlements, documents)
— history of the last 2 months
— manual expense entry

Premium (Duo Plus):
— full history, no time limit
— PDF and CSV export — documentation for a lawyer or court
— statistics — totals by category, month, parent
— audit trail — complete event history of every case
— push and email notifications when the other parent adds an expense
— AI auto-fill from a PDF receipt (free tier: 10 uses lifetime)


Privacy Policy: https://1tnt.link/duo/privacy.html
Terms of Use (EULA): https://1tnt.link/duo/eula.html