Mobile App Development
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Case study · Internal product
InvoiceFlow
GST invoices and quotations for Indian businesses: offline, on Android.
Mobile ApplicationsView app details (opens in a new tab)
InvoiceFlow · Android app- Client / project
- InvoiceFlow
- Industry
- Small business invoicing
- Project type
- Internal product
- Year
- —
The business challenge
Small Indian businesses need GST-compliant invoices and quotations, but desktop accounting software is heavy and online tools require an account and an internet connection.
Project objectives
- Create GST and non-GST invoices in minutes
- Turn accepted quotations into invoices
- Track payments and outstanding balances
- Work fully offline with no account
The solution
A free Android app that creates professional B2B and B2C invoices, quotations, and estimates in minutes. It calculates CGST, SGST, IGST, and cess automatically, exports clean PDFs and images, and keeps every record on the phone.
Design & development approach
- Built offline-first, with all data stored on the device
- Automated GST calculations for CGST, SGST, IGST, and cess
- Designed six branded invoice templates
- Added backup and restore so records are never lost
Key features
- Tax invoices and bills of supply with HSN/SAC, place of supply, and reverse charge
- Quotations that convert to invoices in one tap
- PDF, PNG, and JPEG export; share via WhatsApp, email, or print
- Partial and full payment tracking with overdue invoices
- Six templates with logo, colours, signature, bank details, and UPI QR code
- No account needed, with backup and restore
Related services
Services behind this project.
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