One key works on one device. After this, the key stays with this phone or computer.
One QR per part, each ₹1,999 or less. Tick them off as the money lands.
This app draws standard UPI QRs and keeps your own record. It can't see your bank account, so “paid” means you marked it paid. Check the money in your UPI or bank app first. Splitting a bill doesn't change what you owe under your bank's or payment provider's terms.