LKIN Privacy Policy

Last updated: August 10, 2026

At a glance

• LKIN never knows which apps you lock. Apple's Screen Time technology gives us opaque tokens, not app names, and that data never leaves your iPhone.
• Face ID happens entirely on your device. We only receive a pass/fail result — never your biometric data.
• We sync your learning progress, streaks, and settings to the cloud (Google Firebase) so you can restore them on a new device.
• We use Firebase Analytics to understand how the app is used, and Google AdMob to show ads on the free tier. LKIN Pro removes all ads.
• Payments are handled entirely by Apple. We never see your card details.
• We do not sell your data. You can export or permanently delete your data from inside the app at any time.

What stays on your device

Screen Time and app locking. LKIN uses Apple's Screen Time technology (the FamilyControls and ManagedSettings frameworks) to lock the apps you choose, after you grant a system permission. When you select apps to lock, iOS gives LKIN opaque tokens — we cannot see which apps you selected, and neither can our servers. The screen-time report shown during onboarding (your most-used apps) is rendered by an OS extension entirely on your device. None of this Screen Time data ever leaves your iPhone or reaches our servers.

Face ID. If you turn on the optional Face ID requirement before lock changes, authentication is performed by Apple's LocalAuthentication framework. Your biometric data stays in your device's Secure Enclave; LKIN only receives a pass or fail result.

What we collect and why

Account. When you first launch LKIN, an anonymous Firebase (Google) account is created to enable cloud sync. You can optionally link it with Sign in with Apple — in that case we receive your name only if you choose to share it, plus an Apple-provided identifier. We never receive a password.

Cloud sync. To restore your progress if you reinstall the app or switch devices, we store the following in Google Firebase Firestore:

• Learning progress per word (state, correct/wrong counts, review schedule)
• Your streak: count, a calendar of practiced days, and streak-freeze usage
• Lifetime learning stats and daily session counts
• Saved words and curriculum stages passed
• App settings: chosen language, daily goal, session size, unlock window, notification preferences, and reset bookkeeping
• Your display name, if you signed in and shared it

Support requests. If you are a Pro user and use the optional in-app support form, we collect your name, contact details (the email or phone number you type), your problem description, app and iOS version, subscription status, and learning language. This is stored in Firestore and used only to answer your request. Deleting your account also deletes your support tickets.

Analytics. We use Google Firebase Analytics to collect usage events (for example: session completed, paywall viewed, feature used), device model, OS version, and coarse usage metadata per Google's standard collection. We use this to improve the app.

Ads. The free tier shows banner ads and optional rewarded ads served by Google AdMob. Google may use device identifiers to serve and measure ads, subject to iOS's App Tracking Transparency and your device settings. LKIN Pro removes all ads.

Payments. LKIN Pro subscriptions are billed and managed entirely by Apple through your App Store account. We never receive your payment card details. Refunds are handled by Apple at reportaproblem.apple.com.

Third-party processors

We do not sell your data. We work with these processors:

• Google (Firebase) — anonymous accounts, cloud sync of learning data, support tickets, and analytics; servers operated by Google.
• Google (AdMob) — ad serving and measurement on the free tier.
• Apple — Sign in with Apple, subscription purchases, and notifications.
• Superwall — subscription paywall presentation and related events.

Data retention

Your cloud-synced data (learning progress, streaks, settings, support tickets) is kept for as long as your account exists so we can restore your progress across devices. When you delete your account in the app, this data is permanently deleted. Screen Time and Face ID data are never collected in the first place, so there is nothing for us to retain.

Your controls

• Export my data (Settings > Your data): download a JSON export of your settings, streak, progress, and session log.
• Delete account & data: permanently deletes your cloud data (progress, sessions, support tickets) and your sign-in. This is available directly in the app — no need to contact support.
• Reset all data: wipes your local and cloud progress.

International transfers

Your data may be processed on servers located outside your country, including in the United States and India, by the processors listed above.

Children

LKIN is not directed at children under 13, and we do not knowingly collect data from them.

Your rights under GDPR and UK GDPR

If you are in the European Economic Area or the United Kingdom, you have the right to access, rectify, erase, and port your data, and to object to certain processing. You can exercise most of these rights directly through the in-app tools described above (export, deletion, reset), or by emailing us at lkin@gamifytechsolutions.com. You also have the right to lodge a complaint with your local supervisory authority.

Your California rights

If you are a California resident, the CCPA/CPRA gives you the right to know what personal information we collect (described in this policy), the right to delete it (available in-app via Delete account & data), and the right to opt out of the sale of personal information — we do not sell your data. To exercise these rights, use the in-app tools or email us at lkin@gamifytechsolutions.com.

Changes to this policy

If we make material changes to this policy, we will notify you through the app and update the date at the top of this page.

Contact

LKIN is made by Gamifytech Solutions Pvt Ltd, a private limited company in India (gamifytechsolutions.com). For any privacy questions or requests, email us at lkin@gamifytechsolutions.com.