Support & FAQ

The app includes Traditional Chinese, English, and Japanese. Switch instantly under Settings → Language — the interface updates immediately, no restart needed.

Open the app, tap “Sign Up,” and enter your email and password. Google and Apple sign-in are also supported, and you can enable Face ID for quick unlock.

In a bookkeeping relationship, the Patron sends money and the Butler records expenses. Both sides stay in sync in real time.

On the Contacts page, tap “Add Contact,” then search by email or scan a QR code to send an invite. Once accepted, you can start tracking together.

Create or join a group, add group expenses, and split them equally, by exact amount, or by percentage. Tap “Settle All” to close out the balances in one step.

Yes. Tap “Expense” on Home, choose “Group Expense,” then pick the group.

Confirmed transactions can’t be edited. Create a new transaction to make adjustments.

No. Gayizi only keeps the books and never handles money — the actual transfers are up to you.

Go to Settings → Delete Account. Deletion removes your name, email address, profile picture, and the messages and receipt photos you sent; records you share with another person are kept for them, anonymized. Before deleting, bring balances with all contacts to zero and settle your groups. If you can’t open the app, email gayizi@highersisland.jp from the address you registered with and we will take care of it within 30 days. See the “Delete your account” page.

iPhone: check Settings → Notifications → Gayizi and make sure notifications are allowed.
Android: check Settings → Apps → Gayizi → Notifications and make sure they are turned on.