Connect to your sheet
Paste the Web app link from Apps Script (Deploy → Manage deployments). It ends with /exec. You only do this once on each phone.
Enter your PIN
Staff and owner have different PINs. The owner can change them in the sheet's Settings tab.
A USB or Bluetooth scanner also works: tap the box above, then scan.
Total₹0
Ask the customer. If they don't want to share, tap Skip.
Send bill on WhatsApp
Add stock from a supplier bill
Take a clear photo of the whole bill, flat and in good light. The app reads every line; you check it and add all sets in one tap.