PayGuard: v1.1

PayGuard v1.0: talk to PayPal, safely

Voice-first PayPal assistant for Android, built for the PayPal AI Hackathon 2026.
Shop, pay and track your money by talking or tapping, in Tamil or English.
Every payment is protected by your own PayGuard PIN and your fingerprint.

Install

1. On an Android phone (Android 9 or newer), download PayGuard.apk below.
2. Open it and allow "Install unknown apps" for your browser if Android asks.
3. Make sure the phone has a screen lock (PIN, pattern or fingerprint).

No computer or setup needed: the app uses an online server. Everything runs on the
PayPal sandbox (test money).

Log in

Use a PayPal sandbox (test) account: your own, or the test accounts in the Devpost
testing instructions. Full steps: User guide

What's inside

• Find the best-rated products from online stores, with links to buy there
• Shop by voice: search, reviews, cart and checkout
• Delivery address asked one question at a time, read back before saving
• Pay with PayGuard PIN + fingerprint after the first PayPal checkout (PayPal Vault)
• Pay friends from your own PayPal; pick people from your phone contacts
• Autopay with PayPal Subscriptions, plus reminders for autopays you pay elsewhere
• Track tab: payments, orders, deliveries and autopays in one place
• Scam check, payment limits, and alerts from verified PayPal webhooks