Pay this card

A phone web app for one credit card bill. You pay in your bank. This page only remembers the plan and what you already sent.

How to use it

Open the link on your phone.
Answer one question per screen (currency, leftover, rate, minimum, due date, salary day, this bill’s target, how often).
On payday, pay in your bank app, then tap I paid it.
Add the page to your Home Screen so the numbers stay on this phone.

A WhatsApp in-app browser can use a different store than Safari or Chrome. The Home Screen icon is the reliable way back.

Everything is saved in this browser with localStorage (pay-this-card/v1). Nothing is uploaded. There is no account.

Settings can download a JSON backup and restore it if you change phones.

Open index.html from a tiny server (needed for some browsers):

python3 -m http.server 8766

Then visit http://127.0.0.1:8766/.

Engine checks:

node js/engine.test.js

Push notifications, calendar sync, cloud login, or tracking other debts (rent, car, family).