Rao GST is an offline-first retail billing and self-assisted GST compliance application designed exclusively for Indian micro, small, and medium retailers operating under the GST Composition Scheme (Section 10 of the CGST Act).
The app enables shopkeepers to generate legal Bills of Supply, compute quarterly Form CMP-08 self-assessed tax liabilities (1% for traders/manufacturers, 5% for restaurants, 6% for service providers), prepare annual GSTR-4 worksheets, and export official government-formatted JSON files directly for self-upload.
To generate legal invoices and compute returns, the app stores:
Items sold, prices, discounts, and customer names/phone numbers are kept strictly in your local device registry to maintain your sales book and send receipts via WhatsApp/SMS.
When you export a CMP-08 .json filing sheet or monthly PDF report, it is saved directly to your device's public Download folder. This ensures you retain full ownership of your documents and can upload them directly from your phone's browser or file picker without app lock-in.
The app's automated filing helper functions strictly with client-side guardrails:
https://services.gst.gov.in/services/login) in an isolated WebView. All authentication occurs directly with the official Government of India servers. The app never records or saves your portal credentials or OTPs.We utilize trusted Google Cloud and Google Firebase infrastructure for high security and availability:
This Privacy Policy, developer disclaimers, and web documentation are hosted via Google Firebase Hosting at https://raogst-in.web.app/privacy.html with global CDN edge delivery and SSL/TLS HTTPS encryption.
Secure phone number verification and OTP login are handled via Google Firebase Auth, protecting against unauthorized access.
If you choose to enable cloud sync, your business data is transmitted via end-to-end TLS 1.3 encryption and stored at rest using AES-256 encryption in secure Google Cloud data centers. Strict Firestore Security Rules enforce tenant isolation so that only your authenticated account can ever read or write your data.
| Permission | Technical Name | Usage & Purpose |
|---|---|---|
| Internet Access | android.permission.INTERNET |
Used for Firebase Phone OTP login, optional encrypted cloud sync, and loading the GST portal assistant. |
| Network State | android.permission.ACCESS_NETWORK_STATE |
Enables the app to seamlessly toggle into 100% offline billing mode. |
| Storage | Public Scoped Downloads | Exports CMP-08 JSON filing sheets and PDF invoices to Download/Rao_GST_Returns. |
| Camera (Optional) | android.permission.CAMERA |
Used only when scanning product barcodes or supplier UPI QR codes. |
You retain 100% ownership of your business records. You may export or delete your local records at any time. To request permanent deletion of your Firebase cloud backup account, navigate to Settings → Account or email aimasteragr@gmail.com with your registered mobile number; all associated cloud records will be permanently erased within 7 business days.
Rao GST is an independent software application developed by an independent software developer. It is not an official application of the Goods and Services Tax Network (GSTN), CBIC, or the Government of India. It functions solely as a self-filing calculator and ledger helper tool.
For any privacy inquiries, data safety requests, or support: