Duo
Manage child expenses together. Without the chaos.
Transparent between two parents. Clearly split shares, running balance, and full expense history in one place.

Why Duo?
After a breakup, there are enough emotions. Expenses shouldn't be another source.
The problem isn't the amount. It's the chaos.
Expenses sent via chat get lost among other messages. Without a system, every receipt becomes a dispute. Not about money — about who said what.
Invisibility creates suspicion.
When both parents don't see the same data, each fills in their own story. The argument 'I didn't know' can't be proven or disproven.
Uncertainty costs more than expenses.
Checking, questioning, proving. That costs energy, time, and the relationship. A system removes it before it starts.
How it works
Add an expense
Enter the amount, category, and date. Takes seconds.
Attach proof
Snap a photo of the receipt or upload a PDF. Required for every expense.
Partner reviews
The other parent approves or disputes with a reason. No silent moves.
Balance updates
Only approved expenses count. The running balance reflects reality.
Screenshots

All child expenses

Complete history

Who paid what

Quick entry

PDF or CSV
Features
Proof required
Every expense needs a photo or PDF receipt. No exceptions. This isn't about trust — it's about clarity.
Approval workflow
Nothing counts until the other parent approves it. Unapproved expenses stay visible but don't affect the balance.
Dispute with reason
No silent rejections. If a parent disputes an expense, they must say why. The record stays — permanently.
Immutable records
Nothing can be deleted or edited. Every expense, approval, and dispute is preserved exactly as it happened.
Flexible cost sharing
Set a default split ratio or customize it per expense. The app calculates each parent's share automatically.
Running balance
See who owes whom at a glance. Only approved expenses count toward the balance.
Settlement tracking
When you settle up, record it. One parent proposes, the other confirms. Outside the app, inside the record.
PDF & CSV export
Export your complete history for personal records, mediation, or legal use.
Simple and transparent
Core features are free. Premium unlocks extras for both parents.
Everything you need
- Unlimited expenses & receipts
- Approval & dispute workflow
- Running balance
- Settlement tracking
- PDF & CSV export
For both parents
- Email notifications for new expenses
- One subscription covers both parents
- Priority support
Ready to bring clarity?
Download Duo and start tracking expenses together.