What it is
BillZap is a free GST billing app built for small businesses in India. Shop owners create GST-compliant invoices by speaking instead of typing, with the app handling tax, payment codes and sharing automatically. It is designed to work in everyday Indian languages and to keep running even without a network connection.
What it does
Voice billing
Speak the order and BillZap turns it into a ready invoice in seconds, no typing needed.
Multilingual input
Works across several Indian languages including Hindi, Tamil, Telugu and Kannada, with mixed language support.
Automatic GST
Applies CGST, SGST and IGST with HSN code classification so every bill stays GST compliant.
UPI QR payments
Each invoice carries a scannable UPI code so customers can pay on the spot.
Offline and WhatsApp ready
Runs fully offline with local storage, and shares PDFs and payment links over WhatsApp in one tap.
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