Privacy policy

Last updated 4 November 2026

1. Who we are

Tankersathi is software for water-tanker businesses to run their own deliveries — scheduling, customers, payments and expenses. This policy covers the Tankersathi app used by the business owner and their staff, and the customer app and booking website used by their customers. Contact us on WhatsApp at 7813899016.

2. Information the business owner gives us

When you set up Tankersathi, we store your business name, owner name and phone number, and — if you choose to add them — your email address, postal address and GST number. You sign in with your phone number and a one-time code sent on WhatsApp.

If you invite managers or drivers, we store their name, phone number and role. Each of them can see your business's records according to that role.

3. Your business logo and tanker photo

Your logo or tanker photo is shown on your public booking page, so it is stored in a publicly readable location. Anyone who has your booking link can see it. Receipt images are not public. An owner or manager can see all of the business's receipts, and a driver can see only the ones they uploaded.

4. Information about your customers

As you use the app, you can record your customers' name, phone number, an alternate phone number, address, area, landmark and notes.

Your customers' details belong to you. You decide what to record about them and you are responsible for it. We store and process that information on your behalf, and each business's records are kept separate — no other business using Tankersathi can see yours.

5. Your business records

The app stores the order and expense records you create: order amounts, delivery dates, payment status, expenses and receipt images.

6. Contacts on your phone

Tankersathi reads your phone's contacts only when you ask it to — on the import screen, or when you pick a customer from your phone book while making an order — and only after you have agreed. Contacts stay on your phone. Only the people you actually select are saved as customers and stored on our servers; the rest are never uploaded.

Turning on caller recognition also asks for contacts permission, so Android will let Tankersathi recognise callers already saved in your phone book.

7. Recognising callers

If you turn on caller recognition, Tankersathi checks an incoming number against a list of your own customers that is stored on your phone. The number is never sent to us or to anyone else. Tankersathi does not read your call history.

To offer to record an order right after a call, the app detects that a call started and ended, and how long it lasted. This feature is optional, and the app works without it. To do this it also asks for permission to show you a notification after the call, so it can offer to record the order.

8. Your public booking page

If you turn on public booking, your business name, logo and phone number can be seen by anyone who has your booking link.

9. Customers who book through the app or website

In the customer app, you sign in with your phone number and a one-time code sent on WhatsApp. We store that phone number, your name and the delivery addresses you save. The booking website works the same way and uses the same account. We use this information so your booking can be delivered and you can see its status. If you signed in with Google on the booking website in the past, we keep the name and email address from that Google account, along with the phone number and delivery address you gave us, until you ask us to delete them.

Your name, phone number, delivery address and any location sent with a booking are given to the water-tanker business you book from, so that it can deliver the order. The business reads these details inside its own Tankersathi account.

If a water-tanker business has your phone number on its customer list, the orders, payments and balance it recorded for that number are shown to you in the customer app or on the booking website, including orders you did not book yourself.

10. Your location

The customer app and booking website can use your device's precise location so that the driver can find your delivery address. This is optional. If you refuse, you can still book by typing your address.

If you allow it, your location is found when you open the booking form or add a location to a saved address. The app does not collect your location in the background. Your phone's own location service may be used to turn the location into a street and area, which fill in the address form for you to correct. The map uses Google Maps. On the booking website, the map loads when the booking form opens. Google also turns the chosen spot into a street and area if you have not typed your address, and may be given the address you typed so that the map can open near it.

A location sent with a booking is stored with that booking and given to the business you are booking from, which can open it on a map. A location saved with an address is stored until you change or delete that address. We do not use your location for advertising and we do not sell it.

Business app. A business can save a location on the map for itself and for each of its customers. These locations are stored with the business's records and are visible to its staff, so that drivers can find the delivery address. The business app can use your device's precise location only when you open the add location screen or tap its location button. This is optional, and you can move the map by hand instead. The app does not collect your location in the background. The add location screen uses Google Maps, and your phone's own location service may be used to turn a spot on the map into a street and area, or an address into a place on the map.

11. Messages and notifications

Sign-in codes. One-time sign-in codes are sent on WhatsApp through Meta's WhatsApp Business service, so your phone number and the code pass through Meta.

Order updates. If a business turns on WhatsApp updates, its customers can receive messages when an order is confirmed or delivered, or when a payment is recorded. These messages include the business's name and phone number and the amounts paid or due, and they pass through Meta in the same way. Tap Stop updates in any of these messages to stop them.

Push notifications. If you allow notifications, we store a device token and use Google's Firebase Cloud Messaging to deliver them.

12. Companies that help us run the service

We use these companies only to run Tankersathi: Supabase (database, sign-in and file storage), Meta (WhatsApp messages), Google (push notifications and maps) and Vercel (website hosting). We do not sell personal information, and the apps do not show advertising.

13. How the information is protected

All traffic between the app and our servers is encrypted in transit. Data is held in a Postgres database with row-level security, so each business can read only its own records. Our database is hosted by Supabase in the ap-south-1 (Mumbai) region.

14. Keeping and deleting your information

We keep your information for as long as your account exists, or until you ask us to delete it.

Business owners. Deleting your account removes your business and everything in it, permanently — there is no recovery. In the app, go to More → Delete account.

Customers. In the customer app or on the booking website, go to Profile → Delete my account. This removes your customer profile, saved addresses and their locations, and your login. Your bookings stay in the records of the businesses you booked from, because they need those delivery records. Each of those records keeps the name, phone number, address and any location sent with that booking.

See our account deletion page for how to request deletion without the app.

15. Changes to this policy

If this policy changes, we will update the "Last updated" date at the top of this page.

16. Contact

Questions about this policy or your data can be sent to us on WhatsApp at 7813899016.