StampBook is a simple billing app for freelancers, shops and small businesses. Make a professional invoice in under a minute, share it on WhatsApp and collect payment by UPI.
Ten invoice templates with your logo, brand colour, tax, discount and extra charges. Download as PDF in one tap.
Keep client details, see what each client owes, and record full or partial payments against any invoice.
Add a UPI QR with the exact amount, or connect your own Razorpay account so clients can pay from the invoice link.
Send a short link instead of a heavy attachment. Clients can view the invoice and pay without creating an account.
See revenue by month, outstanding amounts, top clients and your expenses in one place.
Sign in with a one-time password on WhatsApp or email. No password to remember.
Add your business name, address, GSTIN, bank or UPI details and logo once.
Pick or add a client, add items and quantities, and StampBook totals everything and numbers the invoice.
Send the link or PDF on WhatsApp or email. Record the payment when it arrives and the status updates.
StampBook is made for people who bill clients but do not want complicated accounting software: freelance designers and developers, photographers, tutors, consultants, repair and service shops, wholesalers and home businesses. If you currently make invoices in Word, Excel or on paper, StampBook replaces that with something faster and tidier, without monthly fees.
Free guides on GST invoices, payment terms, UPI payments and getting paid on time.
The details a GST tax invoice needs in India, how to number invoices, and the common mistakes small businesses make.
BasicsA step-by-step guide for freelancers and small businesses on building a clear invoice that gets paid without back-and-forth.
Getting PaidWhat common payment terms mean, how to pick the right one for your business, and what Indian law says about delayed payments to small suppliers.
StampBook is a billing and invoicing app for Indian freelancers, shopkeepers and small businesses. You can create numbered invoices, manage clients, record payments and expenses, and share invoices as a PDF or a link.
Yes, StampBook is currently free to use. The app shows ads, and users can choose an ad-free plan. If we introduce paid features in future, pricing will be shown clearly before any purchase.
No. You can add a GSTIN and tax rate if you have one, but freelancers and businesses without GST can use StampBook too.
Each invoice can show your UPI ID with a QR code containing the exact amount. If you connect your own Razorpay account, clients can also pay online and the invoice is marked paid automatically.
No. Payments go directly to your own UPI ID or your own gateway account. StampBook does not hold your funds.
Your data is stored with Supabase using industry-standard access controls. Sign-in uses one-time passwords sent to your WhatsApp number or email. Read our Privacy Policy for details.
Yes. StampBook is a web app designed for mobile first and it also works on desktop.
StampBook