Privacy Policy

B777 Question Bank · Last updated: June 30, 2026

This Privacy Policy explains how B777 Question Bank ("the App"), published by Karahan Labs ("we", "us"), handles your information. We built the App to collect as little data as possible. By using the App you agree to this policy.

1. Information stored on your device

The App stores the following locally on your device only. We do not have access to it and it is not transmitted to our servers (we do not operate any):

• Your chosen name or callsign (used only for the greeting)
• Study progress and statistics (answered questions, accuracy, streaks, exam history, coverage, flagged and missed questions)
• Any custom questions you create
• Your premium/entitlement status and settings (theme, daily goal)

This data remains on your device and is removed when you delete the App, or you can clear it in Settings → Reset Progress.

2. Purchases

The App offers optional in-app purchases and subscriptions. Payments are processed by Apple; we never see or store your payment details. To manage entitlements we use RevenueCat, Inc., a purchase-management provider. When you make or restore a purchase, RevenueCat and Apple may process:

• Purchase and subscription transaction data (product, status, renewal/expiration)
• An anonymous, randomly generated app user identifier
• Device and operating-system information and IP address (used for fraud prevention and to deliver the correct content)

We use this only to grant and restore the content you purchased. See RevenueCat's Privacy Policy and Apple's Privacy Policy.

3. What we do not do

• We do not require an account, email, or login.
• We do not use advertising or third-party tracking/analytics SDKs.
• We do not sell or share your personal information.

4. Children

The App is a general-audience educational tool and is not directed to children under 13. We do not knowingly collect personal information from children.

5. Data retention & your choices

Locally stored data stays until you reset it or uninstall the App. Purchase records held by Apple and RevenueCat are retained according to their own policies; you may request deletion of RevenueCat-held data by contacting us.

6. Security

On-device data is protected by your device's standard protections. Purchase data is handled over encrypted connections by Apple and RevenueCat.

7. Changes

We may update this policy; the "Last updated" date will change accordingly. Continued use of the App after an update constitutes acceptance.

8. Contact

Questions about this policy: support@karahanlabs.com