MarketLens Privacy Policy
Effective date: November 8, 2026
MarketLens ("we", "us") is an app that explains financial news and the ideas behind it. This policy explains what information the app collects, why, and the choices you have. MarketLens is operated by Satyam Chauhan, reachable at marketlensapp@gmail.com.
The short version
- You sign up with an email address and password, or with Apple, Google, Facebook or LinkedIn where offered. Questions about you during sign-up are optional.
- We record how you use the app (for example, which stories you read and for how long) so we can improve it.
- We do not sell your information, show ads, or track you across other apps or websites.
- Your location, used only for walking tours, is never sent to us.
- You can turn off usage data at any time, and you can delete your account and its data from Settings.
What we collect
Account information
- Your email address and password. Your password is stored only in encrypted (hashed) form by our database provider; we cannot see it.
- If you sign in with Apple, Google, Facebook or LinkedIn: the email address and name that service shares with us, and an account identifier from it. We never receive your password for that service, and we don't post to it or read your contacts. With Sign in with Apple you can hide your email; Apple then gives us a private relay address.
Optional profile answers. If you answer these during sign-up, we keep:
- your first and last name
- the year you were born (to understand age groups and to confirm you are 13 or older)
- what describes you (for example, student or professional)
- your school or employer, and field of study
- your finance experience, your goals and the topics you're interested in
- how you heard about MarketLens
- whether you'd like update emails
We also record your country (from your device's region setting) and time zone.
How you use the app. We record:
- which screens, stories, chapters, concepts, companies, articles and walks you open, and how long you spend on them
- your 👍/👎 ratings, "Was this helpful?" answers and problem reports
- company searches you type
- sign-in and onboarding steps
Each event includes:
- your device model, iOS version, app version, language and time zone
- a random ID created for your installation of the app
- a random ID for each session
Location (walking tours only). When you start a walk, the app uses your location to tell each stop's story as you reach it and to show walking directions to the next stop. Location is processed on your phone and is not sent to us. To draw walking directions, your phone asks Apple Maps for a route, which shares your approximate position with Apple under Apple's privacy policy.
Your Scorecard. The You tab's Scorecard (your weekly learning score and activity) is calculated and stored on your phone only.
What we don't collect: your contacts, photos, advertising identifier, precise location, or any information about your own investments or financial accounts.
How we use it
- To run your account and keep you signed in.
- To personalize what you see, for example stories on topics you chose.
- To understand which stories and lessons help people learn, and to fix what doesn't work.
- To send you update emails, only if you opted in. You can unsubscribe at any time.
We do not use your information for advertising, and we do not sell or rent it.
Who processes it
- Supabase stores your account, profile and usage data, and handles sign-in. Data is stored in the United States.
- Apple, Google, Meta (Facebook) and LinkedIn confirm who you are when you choose to sign in with them. Their own privacy policies cover what they do.
- OpenAI generates the explanations in the app. It receives news headlines, public economic data and lesson text, not your personal information.
- News and data providers supply headlines and public data. They receive no personal information about you.
- Apple distributes the app (App Store and TestFlight) under its own privacy policy.
We may disclose information if required by law, or to protect the safety of our users or others.
How long we keep it
We keep your account and profile while your account exists. Usage data is kept for up to 24 months and then deleted or made anonymous. When you delete your account, your profile and all usage data linked to it are deleted.
Your choices and rights
- Turn off usage data: You → Settings → "Share usage data". The app works the same either way.
- Delete your account: You → Delete account. This permanently deletes your account, profile answers and usage history.
- Access or correct your data: email marketlensapp@gmail.com and we'll respond within 30 days.
Depending on where you live (for example, the EU, UK or California), you may have additional rights, such as to object to processing or to receive a copy of your data. Contact us to use them.
Children
MarketLens is not directed to children under 13, and we don't knowingly collect information from them. If you believe a child has created an account, contact us and we'll delete it.
Security
Data is encrypted in transit. Access to our database is restricted, and each user can read only their own account information. No method of transmission or storage is completely secure, but we work to protect your information.
Changes
If we change this policy, we'll update the effective date above and, for significant changes, tell you in the app.