Chakravyuh · Privacy Policy

Privacy Policy

Effective 14 October 2026 · applies to the Chakravyuh Android app and the web app at this site.

In short: you need a free account to use Chakravyuh. We store your registration details, your study progress and a backup of your study data so you can restore it on any phone, and we count which parts of the app are used so we can improve it. We do not sell your data, we do not show ads, and you can delete your account and all its data from inside the app at any time.

1. Who we are

Chakravyuh is a UPSC Civil Services Examination preparation app built and run by Prasanna, Visakhapatnam, Andhra Pradesh, India ("we", "us"). For any privacy question or request, write to web@f9tech.com. This address is also our grievance contact under India's Digital Personal Data Protection Act, 2023.

2. What we collect

Data	Examples	Why
Account	Email address; your name from Google if you sign in with Google; a password (stored only as a secure hash by our provider)	To create your account and sign you in
Registration details	Full name, mobile number, state, city, year and number of attempt, exam medium, optional subject, how you prepare (self-study / coaching and institute name), study-time plan	To build your study plan, optional module and countdown, and to understand who uses the app
Study progress	Daily study minutes, questions attempted and correct, Mains answers written, current-affairs articles read, streak, XP and ring	To show your progress and keep it safe across devices
Study-data backup	A copy of what you create in the app: your plan, notes, answers, revision cards, test results	So you can restore everything after changing or resetting your phone
App usage	When you open the app and for how long, which screens you open, sign-in and sign-out events	To see which features help aspirants and fix what does not
Device information	Platform (Android or web), app version, browser/device model string	To fix bugs that affect particular devices

We do not collect your location, contacts, photos, call logs, SMS, advertising ID or payment information. Newspaper PDFs you open in the app are read on your phone and are not uploaded to us.

3. How we use it

To provide the app: sign-in, your plan, progress and restore.
To improve the app: we look at usage counts (for example, how many people used the Essay module this week).
To contact you about your account (for example, a sign-in code or a password reset). We do not send marketing email.

We do not sell, rent or share your personal data with advertisers or data brokers. We do not use it for automated decisions about you.

4. Where it is stored

Data is stored with our backend provider, Supabase (a hosted PostgreSQL database), and the web app is served by Vercel. Both act only on our instructions. Data is encrypted in transit (HTTPS) and at rest. Access is restricted by row-level security: each signed-in user can read only their own records; only the app's administrator can see aggregated and per-user data for running the service. Your study data is also kept on your own phone.

5. How long we keep it

We keep your account data while your account exists. Usage records older than 24 months are deleted. When you delete your account, your profile, progress, usage records and cloud backup are deleted from our database immediately; residual copies in our provider's encrypted backups expire within 30 days.

6. Your choices and rights

See and correct your details any time in the app: Me → Profile.
Get a copy of your study data: Me → Account → Save backup file.
Delete your account in the app: Me → Account → Delete account. Or follow the steps on chakravyuh delete-account page, or email us from your account email and we will delete it within 7 days.
Withdraw consent by deleting your account. The app needs an account to work, so withdrawing consent ends your use of the app.
You may raise a grievance with us at the address above, and, if unresolved, with the Data Protection Board of India.

7. Children

Chakravyuh is meant for UPSC aspirants, who must be at least 21 years old to sit the exam. The app is not directed at children and we do not knowingly collect data from anyone under 18. If you believe a child has created an account, write to us and we will delete it.

8. Changes

If we change this policy we will update the date above and, for significant changes, tell you in the app before they take effect.