Simple Invoice - Bill Maker

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About this app

Turn a job into a GST-ready invoice in under a minute.

Simple Invoice is a billing app built for the people who send the bill themselves — freelancers, consultants, contractors, shop owners, traders and small agencies. No accounting jargon, no setup weekend. Add a customer, add your items, and send a clean PDF bill on WhatsApp.

GST, DONE RIGHT
• Proper GST invoices with CGST, SGST and IGST
• Intrastate and interstate worked out from the place of supply automatically
• GSTIN captured for your business and your customer, with format validation
• HSN codes for goods, SAC codes for services
• All the standard slabs: 0%, 0.25%, 3%, 5%, 12%, 18% and 28%
• Tax breakdown printed on the invoice, the way your CA expects it

CREATE INVOICES IN THREE STEPS
• Pick a customer, add line items, review the total — that's the whole flow
• Invoice numbers generated automatically, in your own format
• Save as a draft and finish it later
• Duplicate a past invoice when the same job repeats
• Add notes, payment terms and due dates

PROFESSIONAL PDF BILLS
• Clean, print-ready PDF with your logo and business details
• Share to WhatsApp, email or any app on your phone
• Print straight from the app
• Save a copy to your device

GET PAID, AND KNOW WHO HASN'T PAID
• Mark invoices Draft, Sent, Paid or Overdue
• Overdue invoices surface at the top so nothing is forgotten
• Running totals for revenue and outstanding amounts
• Search and filter your whole invoice history

BILLING CLIENTS ABROAD
• 35 currencies with the right symbols and number formatting
• Rupee, dollar, euro, pound, dirham, yen and more
• Switch currency per invoice when you export services

CUSTOMER AND PRODUCT RECORDS
• Keep your customers with billing address, email, phone and GSTIN
• Build a catalogue of the products or services you sell
• Set a price and a tax category once, reuse them on every invoice
• See everything you have billed a customer, in one place

YOUR BUSINESS, ON EVERY BILL
• Business name, address, logo and contact details
• Bank account and payment instructions printed on the invoice
• GSTIN and PAN shown where they belong

WORKS OFFLINE
Your invoices live on your device. Create and share bills at the shop, on site, at a market — no signal required.

BACKUP YOU CONTROL
• Encrypted cloud backup, restored with your Google or Apple sign-in
• Restore onto a new phone in a few taps
• Export whenever you want a copy of your own data

SPEAKS YOUR LANGUAGE
23 languages, including Hindi, Marathi, Gujarati, Punjabi and Bengali.

BUILT FOR
Freelancers and consultants · Contractors, electricians, plumbers and tradespeople · Kirana, retail and boutique owners · Traders and distributors · Designers, developers and photographers · Tutors and coaching classes · Small agencies · Online sellers · Anyone who sends a bill and wants it to look right

PRIVACY
Your invoices, customers and business details are stored on your device. Optional backups are encrypted before they leave your phone and are tied to your Google or Apple sign-in.

Download Simple Invoice and send a bill you're happy to put your name on.

What's new

• Send payment reminders on WhatsApp for overdue invoices
• Export invoices, payments and customers to Excel or CSV, month by month
• Dark mode: follow your phone or choose Light or Dark
• Fixes and improvements