💳 Card Tracker

⚪ Not connected

New Card

Card name

Bank

Cut day

Due day

Icon

Color

⚙️ Settings

WhatsApp Reminders

Your WhatsApp number Include country code, e.g. +52 for Mexico. Leave blank to open WhatsApp without a preset number.

Days before due to include in reminder

🔄 Sync across devices (Firebase)

Go to console.firebase.google.com → create a free project
Click Build → Realtime Database → Create database → Start in test mode
Go to Project Settings → General → Your apps → Add a web app
Copy the databaseURL (looks like https://your-project-default-rtdb.firebaseio.com)
Paste it below and hit Save

Firebase Database URL

Your Sync Code

Use this code on other devices to access the same data.

Or enter an existing sync code Warning: this will replace your current data on this device with the other device's data.