Contact us
| For | Write to |
|---|---|
| Help using the app, suggestions, BooksOn access | support@bookson.in |
| A wrong or missing rate, code or notification | support@bookson.in (subject "Rate report") |
| Privacy, deleting your data, complaints | grievance@bookson.in |
We answer support emails on working days, usually within two working days. You can also rate the app and send a suggestion from inside it: About → Rate BooksOn HSN.
Reporting a wrong or missing rate
Always rely on the CBIC notification for your decision. To help us correct the dataset, please include:
- the HSN or SAC code and the item, as shown in the app;
- the rate the app shows and the date you chose ("Rate as on …");
- the notification (number, date and entry) that you believe applies;
- the dataset version from the home screen ("Data updated as on … · dataset vN").
When a code has no rate, its card offers to open the parent heading, open the exemption notification, or email us a report. Confirmed corrections go into the next dataset release; see how updates work.
Common problems
"Check for updates" says it failed
The app keeps working with the dataset it already has. Updates need an internet connection; the nightly check waits for Wi-Fi and a charged battery. Try again later, or update the app from Google Play or Galaxy Store, which also brings the newest dataset.
A banner says this is an unofficial copy
The copy on your phone did not pass the app's integrity check: it was modified, or it is not signed by us. Such a copy may show wrong rates; it does not upload your profile or feedback and does not install dataset updates. Uninstall it and install BooksOn HSN from an official store; see where to get the app.
How do I change the language or theme?
About → Language (English, हिन्दी, தமிழ்; on Android 13 and later also in the phone's app settings) and About → Appearance.
Search does not find my item
Try the code, a shorter word, or the word used in the tariff (for example "automatic data processing" for computers). The app also searches Hindi and Tamil words for common items. If an item is genuinely missing, send us a rate report.
Grievance Officer
In line with the Digital Personal Data Protection Act, 2023 and the Information Technology Act, 2000 and rules made under it, complaints about the app, its content or the handling of your personal data can be sent to:
Subramani S, Grievance Officer
ARISHIMETO Technologies Private Limited
No. 3/9 (2/9), Flat No. 9, II Floor, Unique Apartment, Nehru Nagar 1st Street, Adyar, Chennai – 600 020, Tamil Nadu, India
Email: grievance@bookson.in
Please describe the issue and include your contact details. We act on grievances within 30 days.
Company details
| Publisher | ARISHIMETO Technologies Private Limited |
|---|---|
| CIN | U58200TN2026PTC196842 |
| Registered office | No. 3/9 (2/9), Flat No. 9, II Floor, Unique Apartment, Nehru Nagar 1st Street, Adyar, Chennai – 600 020, Tamil Nadu, India |
| Websites | www.bookson.co.in (this app) · bookson.in (BooksOn software) |
| App | BooksOn HSN – GST Rate Finder · package in.bookson.hsn |