Privacy

What this is

Think Learn is a private study application. It is not a public service and it does not have users beyond the household that runs it. There is no sign-up, no marketing list and nothing to opt out of.

What is stored

Only what the learning loop needs in order to work:

• The student's name and sign-in email, so the app can greet them and, if direct access is switched off, let them sign in.
• A bcrypt hash of the password. The password itself is never stored, logged or displayed.
• Which page of which book was last open, and how far through each book the student has read.
• Bookmarks and notes the student writes on a page.
• Every test attempt: which questions were asked, which option was chosen, whether it was right, and the resulting score.
• A mastery percentage per chapter, calculated from those attempts.
• A record of study activity by date, which is what the streak is counted from.

The textbooks themselves are PDFs of publicly issued Tamil Nadu State Board books, uploaded by the account owner.

What is not stored

• No location, device fingerprint or advertising identifier.
• No third-party analytics, tracking pixels or advertising scripts.
• No payment details of any kind — nothing here is ever paid for.
• No content is sent to any AI service. There is no AI in this application at all: the recommendations and mastery scores are ordinary arithmetic over the student's own results.

Where it lives, and who can see it

Everything sits in one MySQL database on the account owner's own web hosting. It is not shared with anyone, sold to anyone, or copied anywhere else. Only the account owner, as administrator, can read it.

Web-server access logs are kept by the hosting provider under their own retention policy, as they are for any website.

Removing data

The account owner can delete any record, or the entire database, directly. There is no retention period being served and nothing is archived elsewhere first.