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