Support

Questions, bug reports, and how-to.

Getting Started

1. Sign in with your Apple or Google account and set a display name.
2. Create a household and share its invite code with your partner — or join theirs by entering the code they send you.
3. Record expenses as they happen: date, category, amount, and who paid. Add a note or mark it as one partner's personal expense if needed.
4. In settings, adjust each category's burden ratio (the default is 50 : 50) and register fixed costs like rent or subscriptions so they are added automatically every month.
5. At the end of the month, open the settlement screen. The app calculates who pays whom and how much — settle up and mark the month as done.

Frequently Asked Questions

How do I share the app with my partner?

One of you creates a household in the app and issues an invite code (8 characters, valid for 72 hours, reissuable). The other signs in and enters the code to join. A household holds up to two members, and you can start recording expenses on your own before your partner joins.

What is a burden ratio?

It is how each spending category is split between the two of you. Every category defaults to 50 : 50, and you can change it per category — for example, groceries 70 : 30. The monthly settlement uses these ratios, and changing a ratio only affects months that have not been settled yet.

What is the personal-expense flag?

Sometimes one of you pays for something that is really the other person's personal spending — not a shared cost. Mark such an expense with the personal-expense flag, and the full amount is assigned to that person in the monthly settlement instead of being split.

How is the monthly settlement calculated?

For each category, the app splits the month's spending by that category's burden ratio to work out what each person should bear, compares it with what each person actually paid, and adds personal expenses on top. The result is a single amount and direction: who pays whom, and how much. You can then mark the month as settled.

I edited an expense in a month that was already settled. What happens?

Adding, editing, or deleting an expense in a settled month automatically clears that month's settled mark, and a banner prompts you to settle again so the numbers stay correct.

What are fixed-cost templates?

Templates for recurring costs such as rent, utilities, and subscriptions. Once registered, they are added to each month automatically so you never forget them. Disabling or deleting a template keeps the entries it already created.

How do the Home Screen widgets work?

The small widget shows this month's total and the current settlement estimate, and tapping it opens the expense entry screen. The medium widget shows your top categories as buttons — tap one and the entry screen opens with that category already selected, so all that is left to type is the amount.

Why do I see an ad, and what is the "Allow Tracking" prompt?

Our Wallet is free and is supported by a single banner ad at the bottom of the home screen, served by Google AdMob. The "Allow Tracking" prompt is Apple's App Tracking Transparency. Choosing Ask App Not to Track means non-personalized ads are shown instead — nothing else changes. See our Privacy Policy for details.

Is my financial data sent anywhere for analytics?

No. The app uses Google Analytics for Firebase only for anonymous usage events (for example, "an expense was added"). Amounts, notes, category names, and anything else you type are never sent to analytics. Your household data is stored in our database solely to sync it between you and your partner. See our Privacy Policy for details.

How do I leave a household or delete my account?

Both options are in the app's settings screen. Leaving a household keeps your account; deleting your account removes the personal data linked to you. If your partner remains in the household, the shared records are kept so their history stays intact, with your entries attributed to your display name only.

My partner's changes are not showing up.

The app refreshes household data when a screen is opened, and you can pull down on the list to refresh manually at any time. If the data still looks stale, check your network connection and try again; if the problem persists, email us at support@kozuke.dev.

Which devices and languages are supported?

Our Wallet is an iPhone app (portrait orientation). It is available in English, Spanish, Japanese, Korean, and Chinese (Simplified and Traditional), following your device language. See the App Store listing for the minimum iOS version.

Other

For privacy questions, see our Privacy Policy. For anything else, just email support@kozuke.dev.