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About this app

Atom Billing is a complete billing and accounting app for Indian businesses. Create GST invoices, track stock, record payments and file returns, from your phone, your Windows desktop or the web. It works offline and stays in sync across every device you use.

Billing and invoicing

- GST invoices with HSN and SAC codes, CGST, SGST, IGST and automatic round off
- Cash and credit sales, with payment terms and due dates
- Fast counter billing for walk-in customers
- Sale returns and credit notes
- Estimates, proforma invoices, sale orders and delivery challans
- Print on a thermal printer or A4, or share a PDF on WhatsApp

Stock and items

- Item catalogue with units, categories, and wholesale and retail pricing
- Stock updated on every sale and every purchase
- Batch, serial number and godown tracking
- Stock value and item wise profit, item by item

Parties and payments

- Customers and suppliers with full statements and running balances
- Credit limits on parties
- Payment in and payment out, partial or in bulk, across every payment mode
- Payments linked to invoices, so each bill reads Paid, Partial or Unpaid
- Payment reminders on overdue amounts

Purchases and expenses

- Purchase bills, debit notes and expense entries
- Input tax credit tracked on every purchase

GST and compliance

- GSTR-1, GSTR-3B and HSN summary, ready to file
- e-Invoice and e-Way Bill generation
- TCS and TDS

Accounts and reports

- Chart of accounts, journal entries and account statements
- Profit and loss, balance sheet and trial balance
- Sale, purchase, stock, party and ageing reports
- A day book of everything that happened today

Built to be dependable

- Works fully offline. Bill through a power cut or a dead network.
- Syncs across unlimited devices, on Windows, Android, iOS and web
- Audit trail with field level history on every change
- Recycle bin, so a deleted entry comes back
- Automatic backups

Why Atom Billing? Billing software usually makes a business choose: simple enough for the counter, or complete enough for the accountant. Atom Billing is both. Underneath every screen is real double entry accounting, so the books balance without anyone maintaining them. On top is a screen built for speed at the counter.

From Gyankaar Technologies Private Limited.

Made in India.
GST Billing, Invoices, Inventory, Payments & Reports for Your Business
Updated on
Nov 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Photos and videos and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Welcome to Atom Billing! This is our first public release.

With Atom Billing, you can:
• Create GST invoices with HSN codes, tax and totals worked out for you
• Track stock, parties and payments, with every bill showing what is still due
• File GSTR-1 and GSTR-3B, and read profit, stock and party reports
• Work fully offline and sync across unlimited devices

We are just getting started. Share feedback or report an issue at support@atombills.com
Content rating
Everyone
Learn more

App support

About the developer
GYANKAAR TECHNOLOGIES PRIVATE LIMITED
contact@flyrapp.in
3rd Floor, 1545, Obeya Brio, Sector 1, 19th Main Road, HSR Layout, Bengaluru, Karnataka 560102 India
+91 80953 32013