Privacy policy · Zolu Learn

Who we are

Zolu Learn is a brand of Wystan Health Private Limited (CIN: U87900WB2024PTC267941), with its registered office at 4/1F New Kasia Bagan Lane, Ground Floor, Shakespeare Sarani, Kolkata – 700017, West Bengal, India. We are the data controller responsible for personal information collected through zolulearn.com and the Zolu Learn app. You can contact us about privacy at any time at admin@wystan.in.

Zolu's voice, and the record of each lesson

Zolu Learn is a spoken maths tutor for children from kindergarten to Class 4. Zolu, the tutor, listens only inside lessons, and only after a parent or guardian has signed in and agreed to this section inside the app (at the door of the first lesson, and on the Family screen). Until then the lessons run without a microphone and nothing about them leaves the device. There is no free conversation with Zolu: she hears your child only while a lesson is on.

What is collected: when the microphone is on, your child's voice is streamed over the internet so Zolu can hear and answer. No audio is ever kept.
Who processes it: speech is turned into text by Sarvam AI (India); a lesson's help is answered by Anthropic's Claude (USA); Zolu's reply is voiced by ElevenLabs (USA). Each receives only what it needs for that step.
What we keep about your child's learning: a written record of each lesson — which lesson was played and when, each question, every answer (right or wrong, tapped or spoken), when help was asked for, the lines Zolu spoke, and the words your child says to Zolu during a lesson, as text, tied to the question they belong to — together with the app version and an id for the device. Also the errors the app runs into, with what happened just before them.
Why: so we can send you a short note on WhatsApp every few days about how your child is doing and what to try at home; so a lesson that confuses children can be fixed; and so a lesson your child struggled with can be revisited. Never for advertising, and a child is never profiled.
Where, and for how long: the record lives on AWS in Mumbai, India, for as long as your account exists, and is deleted within thirty days of a deletion request. Operational logs of the voice service are kept for ninety days.
Consent: under India's Digital Personal Data Protection Act a child's data is processed only with a parent's or guardian's verifiable consent. That consent is given by the signed-in parent in the app; its version and time are recorded with your account. Withdrawing it — by deleting the account, or by email — stops the collection and starts the deletion.
Your account: your email and a record of your consent (its version and time), stored with your account so we can show we asked.
Your choices: the Family screen lets you sign out, or delete your account at any time. You can ask for a copy of your child's learning record by email. The WhatsApp notes stop when you reply STOP.

We do not use a child's data for advertising, tracking or profiling, and Zolu Learn contains no ads, no third-party trackers and no links out except this page.

What we keep about your child

A parent tells us their child's name, chooses their badge, and gives their date of birth, the class they are in, the language Zolu should speak to them, and whether they are a girl or a boy. Beside that we keep what the lessons produced: which lesson was played and when, the answers given, where help was needed, and the marks earned.

We ask whether your child is a girl or a boy for one reason: so the note we send you can say “she” or “he” instead of repeating your child's name in every sentence, and so the Hinglish note gets its words right — Hindi verbs change with it, and a note that guesses reads badly. It never changes what your child is taught, it is never used to decide anything about them, and it is never used for advertising. The date of birth is asked for so a child starts at the right lesson, and so that we know we are handling a child's data under India's Digital Personal Data Protection Act. An account holds up to three children.

The notes we send you on WhatsApp

Every few days we send the number you signed up with a short note about how your child is getting on: which lesson they played, what went well, what was hard, and one small thing to try at home. At most one a day, in the evening. The message is delivered through the WhatsApp Business Platform (Meta Platforms), which necessarily receives your number and the words of the message and handles them under its own terms. If you reply, a person at Zolu Learn reads your reply and may answer it.

There are three ways to stop the notes, and any of them is enough: turn them off for a child in the app's Settings, reply STOP to any message, or delete your account.

Paying for Zolu Learn

A subscription bought on zolulearn.com is paid through Razorpay (India), which receives your email and payment details and processes them under its own privacy policy. A subscription bought inside the app is sold by Apple or Google: they take the payment, they hold the card, and we never see a card number or your Apple or Google account. We ask Apple and Google directly whether a store subscription is live, so that the app knows what to open — no other company is involved. In every case we keep only the subscription's status and dates and a record of each payment, beside your account. A subscription bought in a store is cancelled in that store.

Information we collect on the website and in the app

Your account: the email address a parent signs up with, and nothing a child types.
Usage: which pages you read and which buttons you tap on zolulearn.com, kept against an anonymous visitor id in a first-party cookie (zl_vid, thirteen months) together with where the visit came from (for example an Instagram reel). If you start a trial, that visit is joined to your account so we can tell which of our own posts brought you.
Website analytics and advertising measurement: zolulearn.com uses Google Analytics 4 (Google LLC, USA; cookies _ga and _ga_*, kept up to fourteen months, with ad personalisation and Google Signals switched off) to understand how the site is used, and the Meta Pixel with its Conversions API (Meta Platforms; cookies _fbp and _fbc) to measure whether our Instagram posts lead to trials. When you start a trial we send Meta a one-way hash of your email and phone number so that it can match the trial to an ad view. These tools run on the website only, never on your child's screens, and a child is never profiled for advertising. Google and Meta may process this data outside India. You can opt out of Google Analytics with Google's browser add-on, and out of the Meta Pixel with a content blocker; neither affects your subscription.

Google Analytics and the Meta Pixel run on the website only. Neither is present in the app, and no child's screen is ever measured by them.

In the app we collect less, and none of it is about advertising:

This install: an id made on the device the first time the app is opened, so that an install can be joined to the account that signs in on it and to the subscription that pays for it. It is not an advertising identifier and it says nothing about what else is on your phone. Deleting the app's data removes it, and the next use makes a fresh one.
Which app and which version: whether it is the Android app, the iPhone app or the website, and the version, so that a fault can be traced to the build it happened in. On Android the Play Store also tells us which link brought the install.
How the lessons went: the record described above, sent when a parent has agreed to it.

How we use it

To run Zolu Learn for your child, to send you the progress notes described above, to tell you about your own account — a trial ending, a payment that did not go through — and to improve the tutor. We do not sell your personal information, and nothing about a child is used for advertising.

How long we keep things

The record of your child's lessons, and the notes we sent you: as long as your account exists.
Anything you ask us to delete: removed within thirty days.
Records of payments — the amount, the date and the invoice, with no learning data attached: eight years, because company and tax law require us to keep our books that long. A deletion request cannot shorten this, and nothing in these records says what a child did.
The voice service's operational logs: ninety days.
The website's visitor cookie: thirteen months. Google Analytics: up to fourteen months.

Children's privacy

Zolu Learn is for children from kindergarten to about Class 4 — roughly four to ten years old. The account, and every consent on it, belongs to a parent or guardian and never to a child: a child cannot make an account, agree to this notice, or change who hears from us. Under India's Digital Personal Data Protection Act, no child's personal data is used for advertising, tracking or behavioural monitoring, none is disclosed to an advertiser, and nothing we keep about a child is used to profile them.

Your rights, and how to reach us

You can ask us to show you what we hold, correct it, or delete it; you can withdraw a consent you gave; and you can nominate someone to exercise these rights on your behalf. The quickest of them need no email at all: the progress notes are switched off for a child in the app's Settings, and the whole account and everything on it can be deleted on the app's Family screen.

For anything else, or to raise a grievance, write to our Grievance Officer at admin@wystan.in. We answer within thirty days.

Changes to this notice

This is the first version, effective 14 September 2026. If we change it in a way that affects what we collect or what we do with it, we will say so in the app before the change takes effect, and ask again where the law needs us to.