Duo: Co-Parenting Expenses
Co-parent approval, receipts
Only for iPhone
Free · In‑App Purchases
iPhone
Add an expense with the receipt, the co-parent approves, history cannot be rewritten. On record if you ever need it.
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
Ratings & Reviews
Instant notifications
When the other parent adds, approves or disputes an expense, or proposes a settlement, you know right away. Tap the notification to open that expense or settlement directly. We also let you know a day ahead when an expense is about to be approved automatically.
Remind the other parent
Remind the other parent of an unsettled balance or of expenses that have been waiting for approval, with a single tap. Every reminder is recorded, including whether it was seen, and shows up in the history and in the PDF report.
See what needs your attention
The home screen shows a settlement proposal, a dispute or expenses waiting more than two weeks right next to the child. One tap takes you straight there.
A fresh look
A translucent top bar, clearer statistics, and dates and amounts in the format of your language.
New language versions
Alongside Latin American Spanish and Brazilian Portuguese, the app is now available in Spanish for Spain and Portuguese for Portugal. Notifications and emails arrive in the app's language.
Fixes
Every button shows when an action is in progress, and if something goes wrong, you see what happened. We fixed a crash when a notification arrived while the app was open, and strengthened account and purchase security.
The developer, BROKEN MATRIX TECHNOLOGY, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BROKEN MATRIX TECHNOLOGY, LLC
- Size
- 40.6 MB
- Category
- Finance
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
English and 8 more
- English, Czech, French, German, Italian, Polish, Portuguese, Slovak, Spanish
- Age Rating
16+
- 16+
- In-App Purchases
Yes
- Monthly subscription $4.99
- Yearly subscription $49.99
- Duo Plus - Lifetime access $99.99
- Copyright
- © Broken Matrix Technology
