Version française

Available on the App Store

DuoSpend — Who owes what?

DuoSpend helps couples track expenses for a shared project: a trip, a move, a wedding or home improvements.

Each person adds what they paid, and the app shows what remains to be balanced, without a connected bank or spreadsheet.

Download on the App Store See how it works

For projects you share as a couple

Shared project expenses add up quickly: a trip, a move, a wedding, home improvements, a weekend or holidays.

At first everything seems obvious, then who-paid-what gets fuzzy and manual calculations pile up.

DuoSpend keeps the flow simple: add expenses in seconds and keep balances readable at all times.

Key points

Markers to keep balances clear, without spreadsheets.

Shared expenses

One shared project, two people, one readable balance.

Each payment joins the same thread: a trip, a wedding, home improvements or a move. The app keeps who paid what and what remains to settle.

Clear balances

Who paid what, who owes what.

DuoSpend computes who advanced money and what remains to settle.

Made for two

Couples and shared projects.

A lightweight flow to keep balances clear without accounting complexity.

No spreadsheet

No scattered notes, no manual math.

The app keeps the thread for you, project after project.

Fast readability

Understand the situation in seconds.

A focused interface for quick financial clarity.

Available

The app is published on the App Store.

DuoSpend is free to download, with DuoSpend Pro available as a one-time in-app purchase.

Main DuoSpend screens.

DuoSpend onboarding screen with the promise to manage shared expenses together
Better managed togetherThe product promise before starting
DuoSpend new expense form with amount, title, payer, and custom split
Add an expenseAmount, payer, and split in one flow
DuoSpend Italy Trip balance showing who owes money and the project expenses
Track the balanceWho paid, who owes, and what remains
DuoSpend project list with shared budgets for trips, renovations, and events
Shared projectsSeveral projects with clear balances
DuoSpend PDF export sheet for sharing a project recap
PDF exportShareable recap
DuoSpend settings screen showing Pro access, PDF export, privacy, and support
Pro and settingsExport, support, and local preferences
DuoSpend onboarding screen with the promise to manage shared expenses together
Better managed togetherThe product promise before starting

Try DuoSpend for free

Download the app, create your first shared project, then upgrade to DuoSpend Pro if you need unlimited projects, widgets, and PDF export.

Download on the App Store

Pricing

Free to download · DuoSpend Pro: $5.99 in the US / €6.99 in the euro area.

Free

Free

Download DuoSpend and track your first shared project.

  • 1 full project
  • Essential features included
Recommended

DuoSpend Pro

$5.99

One-time in-app purchase through the App Store. Pricing is localized by country.

  • Unlimited projects
  • Home screen widgets
  • PDF export
  • No subscription

FAQ

Frequently asked questions.

Frequently asked questions

What is DuoSpend for?

DuoSpend helps two people track shared expenses. Add an expense, set who paid, choose a split, and instantly see who owes what.

Who is it for?

Couples, roommates, friends, or family sharing expenses for a project or period: travel, moving, events, home projects, or daily spending.

Why not just use a spreadsheet?

Spreadsheets can work, but they require manual upkeep. DuoSpend keeps expenses, splits, and balances in one clear flow.

Can I split differently than 50/50?

Yes. Each expense can be split evenly or with custom ratios, such as 60/40 or 70/30.

What is in the free version?

The free version lets you manage one complete project with essential features: budget, expenses, custom splits, and clear balance.

What does DuoSpend Pro unlock?

DuoSpend Pro unlocks unlimited projects, home screen widgets, and PDF export with a one-time purchase.

How much is DuoSpend Pro?

DuoSpend Pro is a one-time in-app purchase. It is $5.99 in the US and €6.99 in the euro area; pricing is localized by country. No subscription.

Do I need an account?

No. DuoSpend works without an account.

Do my data stay private?

Yes. In the current version, projects and expenses stay local on your iPhone. The privacy section provides full details.

Can two people use DuoSpend on two iPhones?

Not in the first version. DuoSpend starts as local tracking on one iPhone. Optional iCloud sync and shared usage are planned later.

Support

Have a question, found a bug, or want to suggest an improvement for DuoSpend?

Please check the FAQ above first: it covers the most common questions about setup, usage, data, and privacy.

If the issue persists, please include:

  • your device model;
  • your iOS or iPadOS version;
  • the app version;
  • the steps needed to reproduce the issue.
Contact support for DuoSpend

Privacy

Privacy policy — EN

Privacy policy

DuoSpend does not collect any personally identifiable information.

In the current version, projects and expenses are stored locally on your iPhone with SwiftData. Optional iCloud sync is planned for a future version; this policy will be updated accordingly.

When you use the home screen widgets, a limited copy of your data may be shared between the app and the widget extension through a local App Group managed by iOS.

If you purchase DuoSpend Pro, Apple handles the transaction through the App Store. DuoSpend does not receive or store payment information. Only the purchase state is kept locally.

DuoSpend includes no tracking, no advertising, and no third-party SDKs such as Firebase, Amplitude, or Mixpanel.

The current version works fully offline. Optional iCloud sync is planned for a future version.

You can delete all your data from Settings → Data → Delete all data. This action is irreversible.

DuoSpend is not intended for children under 13.

For any question, the DuoSpend page remains the contact point.