KAI: GST Invoice, Bill & Khata

GST billing, invoicing, khata and accounting — offline, on your phone. KAI is a complete GST accounting and billing app for Indian small businesses: shop owners, traders, freelancers, distributors and small firms who need proper, GST-compliant books without enterprise complexity or a monthly cloud subscription. Everything stays on your device. No mandatory cloud account, no server holding your financial data. KAI works fully offline, from your very first invoice. GST INVOICING & BILLING • GST-compliant invoices with sequential numbering, CGST+SGST and IGST splits, and HSN codes • Five invoice templates, downloadable and shareable as PDF • A digital bill book that works with no internet connection KHATA & LEDGER • Full customer and vendor khata with running balances • Track udhar given and received against every party • Per-party and per-account general ledger • Multi-account banking: bank and cash books, deposits EXPENSES & PURCHASES • General expenses, recurring bills and purchase returns • AI-powered receipt scanning • Vendor bills, stock tracking and low-stock alerts PAYROLL & COMPLIANCE • Salary processing with PF, ESI, TDS and Professional Tax • Payslips, leave management and full & final settlement • Fixed assets with depreciation schedules • Loans and repayment tracking, posted to your ledger automatically GST RETURNS & REPORTS • GSTR-1 and GSTR-3B summaries generated straight from your invoices • GST liability tracker • Profit & Loss, Balance Sheet, Cash Flow and General Ledger, updated in real time AI ASSISTANT Ask in plain language. Search invoices, create expenses, check party balances and pull up your numbers just by typing what you want. EASY SWITCH & SAFE BACKUP • A guided migration wizard imports your historical data from your previous billing or khata app • Encrypted Google Drive backup and restore, whenever you choose BUILT FOR INDIAN BUSINESSES KAI speaks GST, not generic expense tracking. CGST/SGST/IGST splits, HSN codes, GSTR-1 and GSTR-3B summaries, and a chart of accounts built around how Indian businesses actually file — not a Western accounting template with GST added on later. YOUR DATA STAYS YOURS Your books are stored locally on your device. Optional encrypted Google Drive backup means they survive a lost phone, but nothing about your business sits on a server you do not control unless you put it there. TRY EVERYTHING FREE FOR 30 DAYS Every new install starts with a full 30-day trial. No payment method, no account, no catch. See whether KAI fits the way you actually run your business before you pay anything. Free to keep using after the trial, with core invoicing and expense tracking from day one. Upgrade any time for unlimited invoices, more staff and bank accounts, and unlimited AI as your business grows. Whether you run a kirana store, a wholesale counter, a services firm or a small workshop, KAI gives you real books, GST-ready returns and complete control of your own data.