Help · for the first version, coming soon
How to use Perpax
Perpax is not released yet. This guide shows how the first version is planned to work. Buttons and screens may change before launch, and we will update this page.
Set up
Open Perpax and type your name. Pick your home currency, such as S$, RM, A$ or US$. There is no account and no bank login.
Make a group
On the Groups tab, start a new group. Name it after the trip, the flat or your makan kaki, and add friends by name. Your friends do not need the app.
Add a bill
Tap Add a bill, the + button. Enter who paid, the amount, the currency and the date. Then choose how to split it:
- Equally: everyone pays the same.
- By item: each person pays for what they had.
- By share: give someone 2 shares if they had twice as much.
- By exact amount: type what each person owes.
Untick anyone who was not there. Spare cents are shared out, so the parts always add up to the bill.
Service charge and GST
For a Singapore receipt, tap Service charge 10% and GST 9%. The service charge comes first, then GST on the bill plus the service charge. For other places, add your own tip and tax.
Other currencies
Add a bill in the currency you paid in, such as baht or rupiah. Perpax converts it at the day's rate and shows the trip total in your home currency. You can edit any rate to match your card.
Settle up
Tap Settle up. Perpax works out the fewest payments that clear the whole group. Tap Mark as paid when money arrives, or Remind to send a gentle nudge. Reminders never show names or amounts on the lock screen.
Share a summary
Tap Share the summary to send the totals by message or QR code. You choose the app and the people.
Export or delete your data
Open You, the third tab. Tap Export my data for a CSV or Excel file. Tap Delete all data on this phone to remove every group, bill and setting. See Delete your data.