Privacy Policy

Last updated: 10 November 2026

ChalkPilot is an AI teacher made by 4BitStack ("we", "us"). This policy explains what we collect when you use ChalkPilot on the website chalkpilot.ai or in the ChalkPilot desktop app, why we collect it, who we share it with, and the choices you have.

In short: we collect what we need to give you your classes and to run the service. We do not sell your data, we do not show ads, and the camera picture used to notice a raised hand never leaves your device.

1. What we collect

Your account

• When you sign in with Google: your email address, the name and photo on your Google account and Google's identifier for your account. The photo becomes your profile picture if you have none, and you can change or remove it. We never see your Google password.
• Your profile: your name, your gender, and, if you give them, your age, what you are preparing for and a profile picture.
• When you agreed to our Terms of Use.

Your classes

• The topics and lecture plans you type, and the lectures, board drawings, notes and quizzes written for you.
• Your doubts, typed or spoken, including the voice recording of a doubt you ask aloud.
• The teacher's spoken answers.
• A photo you add to start a doubt session (such as your homework), and the text of what is in it, which the teacher answers from. Please don't add a photo with personal details on it that you would not want stored.
• How you use your classes: how far you got, the time you spent, the questions you answered, your quiz answers and scores.
• Ratings and comments you give after a class, and messages you send to Support.

Payments

• When you buy credits, the payment is made on Razorpay. We receive and keep the order and payment references, the plan, the amount and the credits added. Your card, UPI or bank details go to Razorpay, not to us.
• Your credit balance and when credits were used.

Your device and connection

• Each time you open ChalkPilot signed in: your IP address, the kind of device (phone, tablet or computer), its operating system and browser (as your browser reports them), and the time.
• Your browser keeps your sign-in and a few settings (such as the voice you chose) on your device, so you stay signed in. The website does not use advertising or tracking cookies.
• In the Android app, Google Analytics for Firebase counts how the app is used, such as when it is opened, when you sign up or sign in, try the free demo or start a class, with your device's advertising ID, so that we can see how well our ads work. It does not receive your classes, your doubts or anything you type. You can reset or delete your advertising ID in your phone's settings.
• In the Android app, Meta's app events (the Meta SDK) count the same things, such as when the app is installed and opened, when you sign up, try the free demo or start a class, with your device's advertising ID, so that we can see how well our ads on Facebook and Instagram work. Meta does not receive your classes, your doubts or anything you type.

Camera and microphone

• If you turn the camera on in a class, it is used only on your device to notice when you raise your hand. The picture is never recorded and never sent to us or anyone else.
• The microphone is used only while it is on in a class or in the device check; what happens to your voice is described above.

2. Why we use it

• To give you your classes: your name, age and what you are preparing for help the teacher speak to you and pitch the class at your level.
• To keep your account, your credits and your purchases.
• To answer you when you write to Support.
• To keep ChalkPilot working and safe: to find and fix problems, to prevent misuse and fraud, and to understand how many people use it and on which devices.
• To improve ChalkPilot. Our team may look at a class, including the doubts asked in it, to check its quality or to fix a problem you or others reported.

We do not sell your personal data, and we do not use it for advertising.

3. Who we share it with

We share only what each service needs to do its job for us:

• AI service providers that write the lectures, answer doubts, speak and listen. They receive the content of your class (your topic, your doubts, a photo you add, your voice while the microphone is on) and the details from your profile that the teacher uses, such as your name and age. They process it to give us an answer, under their terms for business customers.
• Google, to sign you in, and in the Android app to measure its use and our ads (Google Analytics for Firebase and Google Ads).
• Meta, in the Android app, to measure our ads on Facebook and Instagram (the Meta SDK's app events).
• Razorpay, to take payments.
• The companies that host our servers and data.
• Authorities, where the law requires it, or to protect the rights and safety of our users or of others.

Some of these services process data outside India, for example in the United States.

4. How long we keep it

We keep your account and your classes for as long as your account exists. When you delete a class in the app it moves to your archive, from where you can restore it; we still keep it. Sign-in records are kept to keep the service safe and to understand its use. If you ask us to delete your account, we delete your profile, your classes and what you wrote to us, except what the law requires us to keep, such as records of payments.

5. Your choices and rights

• You can see and change your profile at any time from the app's profile page.
• You can leave out your age, what you are preparing for and your profile picture.
• You can keep the camera off: you can still raise your hand with the button.
• You can ask us for a copy of your data, to correct it, or to delete your account and its data, by writing to Support in the app. You can also ask for your account to be deleted on our account deletion page, without the app. We reply within 30 days.
• You can withdraw your consent at any time by asking us to delete your account. This does not affect what was done before.

6. Children

ChalkPilot is made for students, and many of them are under 18. If you are under 18, a parent or guardian must agree to our Terms of Use and this policy before you use ChalkPilot, and should help you decide what to share. We use a student's data only to teach them and to run the service. We do not track children for advertising or show them targeted ads. A parent or guardian can ask us, through Support, to see or delete their child's data.

7. Security

Your connection to ChalkPilot is encrypted, access to our data is limited to the people who run the service, and your account is reached only through your Google sign-in or your private key. No system is perfectly secure, so please tell us through Support if you think your account has been misused.

8. Changes to this policy

If we change this policy, we will update the date at the top of this page. If a change is important, we will tell you in the app before it applies to you.

9. Contact us

For any question about your privacy, or to use any of your rights above, write to us from Support in the ChalkPilot app.